The Sixty-Year Escort

I couldn't sleep. The digital clock on my bedside table showed 02:17, its red numbers glowing in the darkness of my room in the accommodation block. My mind kept returning to the mission six months earlier.

Not the firefights near Basra or the night patrols along roads seeded with explosives. Those had their own compartment in my head. This was different. The ceiling fan turned slowly above my bed.

I stared at it, trying to make sense of what had happened. Most nights, I managed to convince myself that I had imagined the impossible parts. That night was not one of them.

It had begun with a knock on our door at 03:00.

We were stationed at Catterick Garrison then. Callum Price, Elliot Ward, Nathan Cole and me, serving as a rapid-response team. I had been dreaming about fishing near Uncle Peter's cottage at Kielder Water when Staff Sergeant Imogen Clarke hammered on the door.

"Mercer, get your team up. Major Vaughan wants you in the briefing room in fifteen minutes."

I rolled out of bed, already reaching for my MTP uniform.

"What's going on?"

"Vulnerable-person recovery in Scotland. That's all I know."

I woke the others. Callum groaned into his pillow.

"If this is another exercise, I swear I'm putting in for a transfer."

We dressed quickly, moving with the speed of men who had done it a hundred times. The corridor lights were harsh after the darkness of our room. I rubbed the sleep from my eyes as we entered the briefing room.

Major Harriet Vaughan stood at the front, looking more serious than usual. She wore MTP and carried a folder beneath one arm.

"Listen in. I have an unusual set of orders for you."

She opened the folder.

"You've been assigned a vulnerable-person recovery under classified Defence authority. The recovery point is in Caithness, several miles inland from the north coast of Scotland."

Elliot leant forwards.

"A vulnerable-person recovery, ma'am?"

"That's correct. You'll be given coordinates for the collection point, but the supporting information is minimal. Your kit is being loaded into two Foxhounds now. You leave in thirty minutes."

Nathan raised a hand.

"Ma'am, who exactly are we recovering?"

The major glanced down at her folder.

"A civilian woman. That is all the information I have."

I did not like the sound of it.

"Recovery tasks usually come with more detail, ma'am. Medical condition, known risks, reason for the operation."

"I understand your concern, Sergeant Mercer, but these orders have come from well above this garrison. You have your task. Dismissed."

Outside the briefing room, Callum shook his head.

"This is bloody odd. Since when do they send a rapid-response team to collect one vulnerable civilian?"

"Perhaps she's important," Elliot suggested. "Someone whose name isn't meant to appear in the paperwork."

Nathan laughed.

"Or some brigadier's mother has wandered off on a walking holiday."

I did not laugh with them. Something felt wrong, but I kept it to myself.

"Get your kit. We roll in twenty."

We packed quickly. Standard equipment, plus additional medical supplies because we had no idea what condition our target might be in. The vehicle lines were quiet at that hour, with only two mechanics helping to secure our kit in the Foxhounds.

The journey was long, taking us west through Cumbria and then north into Scotland. We changed drivers regularly as we followed the motorways and A-roads towards the Highlands. Callum worked from the coordinates and the Ordnance Survey mapping, guiding us farther and farther north.

"Probably a lost walker," he said during our second hour on the road. "Or someone injured who got off a recognised route."

"In Caithness?" Nathan called from the rear. "There's plenty of country up there where nobody would find you for days."

"Could be surveyors," Elliot offered. "Geologists, perhaps."

I kept my eyes on the dark road ahead.

"Whoever she is, she needs help. That's all that matters."

At about midday, we received our only update through the secure Bowman set. I remember the precise wording because it made no sense.

"Target is a female civilian reported missing in 1963. Recover and transport her to a location of her choosing."

Callum laughed when I relayed it.

"1963? That has to be a transcription error."

"Perhaps they mean sixty days," Elliot suggested.

"Or six months," Nathan added.

I checked the message again.

"No. It says she was reported missing in 1963."

"Has to be wrong," Callum said.

We joked about it for a while. We imagined recovering a ninety-year-old woman who had lived on heather and rainwater for six decades, or finding a time traveller, or perhaps a ghost. The jokes helped the miles pass, but they also concealed how uneasy we were becoming.

The first strange thing happened that night as we crossed Rannoch Moor on the A82. I was driving, with a local radio station playing quietly to keep me alert.

The signal cut out without warning, replaced by static. Then there was silence.

I tried another station. Nothing. Classic rock, BBC news, a classical broadcast - every frequency was dead.

Elliot was asleep in the passenger seat, so I checked the satnav instead. Its screen displayed a single message.

SIGNAL LOST.

I tapped the screen, then looked through the windscreen. The sky was clear and crowded with stars. There was no obvious reason for the failure.

A minute later, the radio and satnav returned as if nothing had happened. I might have dismissed it as an ordinary technical fault if it had not happened three more times on that remote stretch of road.

By morning, we were deep into the Highlands. The landscape had opened into immense tracts of moorland, peat, heather and exposed rock, with distant mountains rising beneath the pale sky. There was almost nothing out there. Few houses, no open petrol stations and only the occasional forestry track or narrow single-track road branching away from the main route.

The jokes stopped during the second day. Each of us had become quiet, thinking about what we might find. Even Nathan, usually the most talkative, stared through the window at the empty moor sliding past.

"We're about twenty miles from the coordinates," Callum announced late that afternoon, studying the map. "We should reach them before sunset."

The final stretch took us away from the main road and onto increasingly narrow lanes. At last we were following little more than a rough track through coarse grass and heather. The Foxhounds handled it, but with every mile we felt more isolated.

"This can't be right," Nathan said as the vehicle jolted over a rut. "There's nothing out here."

Callum checked the coordinates again.

"We're heading for the correct location, whatever's waiting there."

The track ended at the foot of a low rise. According to the satnav, our destination lay directly beyond it. We parked the Foxhounds and continued on foot, weapons ready despite being told that this was merely a recovery task.

The slope was easy to climb, covered in grass, patches of heather and scattered stones. From the top, we could see a broad field stretching before us, its coarse grass and wildflowers stirring in the afternoon wind. It appeared completely empty.

"Check those coordinates again," I told Callum.

He examined his device, then pointed straight ahead.

"That's the location. Right in the middle of that field."

I raised my binoculars and searched the ground. At first there was nothing but grass. Then I saw it and went still.

In the centre of the field, perhaps eight hundred metres away, was a patch of colour that did not belong.

I adjusted the focus. A person was sitting on what appeared to be a wooden village-hall chair, alone in the middle of nowhere.

"I've got eyes on someone," I said, passing the binoculars to Callum.

He looked and handed them to the others. Each man's expression shifted from doubt to confusion.

"Is that an old woman?" Elliot asked.

Through the lenses, I could make out a woman in a dress. She sat perfectly still, facing our direction as though she had been watching the rise and waiting for us to appear.

"How the hell did she get out here?" Nathan asked. "There hasn't been another vehicle for miles."

I had no answer. None of us did.

"Let's move."

I slipped into tactical procedure because it was easier than confronting the impossibility before us.

"Standard approach. Stay alert."

We descended the slope and entered the field, moving in formation through grass that reached our thighs. As we drew closer, the figure became clearer.

She was an elderly woman sitting quietly on a pristine wooden folding chair. She wore a faded green wool dress that seemed to belong to another time, and her white hair was tied in a neat bun.

The peculiar thing was that she showed no surprise at seeing us. There was no relief at being found and no fear at the approach of armed soldiers. She merely sat with her hands in her lap, watching us with what looked like a small smile.

When we were about fifty metres away, I signalled for everyone to slow.

Something was wrong. The woman was too calm, too composed. She showed no sign of exposure, although she must have been outdoors for some time, and there was nothing beside her. No water, food, coat, bag or shelter.

"How is she alive out here?" Elliot whispered.

I had no idea. Yet as we drew closer and I saw her face, old but seemingly untouched by wind or weather, I knew we had found precisely the person we had been sent to recover.

A woman missing since 1963.

We moved through the tall grass, keeping close as we had been trained. The ground was uneven beneath our boots, with stones and hidden hollows catching at our steps. Sweat ran down my back despite the Highland wind. I took the lead and signalled for the others to spread slightly as we closed the final thirty metres.

"Ma'am," I called when we were about five metres away, lowering my weapon so I appeared less threatening. "I'm Sergeant Daniel Mercer, British Army. We're here to help you."

At close quarters, she seemed even more out of place. Her faded green dress might have been fashionable decades earlier, with its modest neckline and hem falling below the knee. Her white hair remained immaculate, every strand in place despite the wind crossing the field.

Her eyes were the most striking thing about her. They were clear and alert, moving quickly over each of us as though assessing our worth.

"Well, aren't you lads punctual?" she said.

Her voice was firm and steady. She rose from the chair without stiffness or effort.

"I'm Edith Harrow, and I'm ready to go home now."

Callum looked at me with raised eyebrows. Behind us, Elliot and Nathan exchanged glances. Her placid acceptance of our arrival made no sense. We were miles from the nearest settlement, standing in an empty field that stretched away on every side.

"Callum, confirm with Pennant Zero that we've located the target," I said quietly.

He nodded and stepped away, speaking into his handset. Elliot and Nathan checked the perimeter for any indication of how Edith had reached the field - tyre marks, a camp, a discarded bag, anything.

I turned back to her.

"Ma'am, can you tell me how long you've been waiting here?"

Her smile did not falter.

"Since 1963, young man."

My arms turned cold despite my exertion.

Sixty years. Exactly as the mission update had said.

I kept my face neutral.

"That's a long time. How have you survived? Are there supplies nearby?"

Edith's smile widened. She did not answer. She simply regarded me with the same pleasant expression, as though I had commented on the weather rather than asked how she had survived for six decades in the open.

Callum returned. His face was calm, but his eyes told me something was wrong.

"Pennant Zero confirms she is the target. We are to take her wherever she asks to go."

I nodded and faced Edith again.

"Our vehicles are beyond that rise. We'll take you to your requested destination."

"Whitby," she said. "I live in Whitby, North Yorkshire."

Nathan approached after completing his search.

"Sergeant, there's nothing here. No vehicle, no supplies, no tracks leading to this spot except ours."

I looked at the chair Edith had occupied. It was an ordinary wooden folding chair of the sort kept in a village hall, yet it looked pristine. There was nothing else. No bottle, bag or scrap of rubbish. Nothing to suggest how she had survived or how long she had truly been there.

"Pack up and move," I said. "Ma'am, would you like help reaching the vehicles?"

"That would be kind of you," Edith replied, extending her hand.

I took her arm, expecting the weight and uncertainty of an elderly person, and nearly pulled too hard. She was unnaturally light. Her skin felt cool and dry despite the afternoon sun.

Elliot lifted the chair. He examined it with a troubled expression before folding it and carrying it beneath one arm.

"There's no damp, rot or weathering," he whispered as he fell in beside me. "It looks brand new."

I gave a slight nod and added the observation to the growing list of things that did not fit.

We crossed the rise to the waiting Foxhounds. The pace was slow, not because Edith struggled with the ground but because every one of us was watching her, trying to understand how she could be there.

"Do you have an exact address in Whitby?" I asked as we approached the vehicles.

"17 Hawthorn Lane," Edith replied without hesitation. "The red-brick villa with cream-painted stonework. You can't miss it."

Callum unfolded the road map and checked the route.

"That's roughly three hundred and eighty miles south, sergeant. Eight or nine hours in normal conditions, perhaps longer in these vehicles."

I helped Edith into the rear of the first Foxhound. Her dress made no sound against the seat, and the vehicle did not shift beneath her weight.

Elliot secured the folded chair in the second Foxhound. Defence quietly removed it after our eventual return to Catterick, and none of us ever learnt where it went.

"You're all very kind," Edith said, folding her hands in her lap. "I knew you would come eventually."

"How did you know that, ma'am?" I asked.

She gazed through the window towards the field where we had found her.

"Some things one simply knows. Like knowing it will rain before the clouds arrive, or knowing when someone is watching you in the dark."

I closed the door and took a moment to compose myself before turning to my team. They stood around me, their faces showing varying degrees of confusion and concern.

"We take her to Whitby as ordered," I said quietly. "Callum, you navigate. Elliot and Nathan follow in the second vehicle. Normal transport procedure."

"Normal procedure for what?" Nathan asked. "For carrying a woman who says she's been waiting in a field since before any of us were born?"

"For completing the task," I replied firmly. "We don't have to understand it. We have to carry it out."

The words sounded hollow even to me. Nothing about the recovery was normal. Nothing about Edith made sense. But we had orders, and I had always been good at obeying them, even when they led into the strangest situation of my military career.

I climbed into the driver's seat and adjusted the mirror so I could watch our passenger.

Edith sat perfectly still, her back straight and her eyes fixed on the field. For one instant, so brief that I thought I had imagined it, her reflection in the mirror was wrong.

It was not the face of an old woman.

Then she turned and caught me looking. Her grandmotherly smile returned.

"It's a long journey to Whitby," she said brightly. "We ought to begin."

I started the engine and selected drive. I could not escape the feeling that we were not merely taking Edith somewhere. She was using us to reach exactly where she wanted to go.

I pulled away from the field where we had found her. The ground was rough for the first mile, the Foxhound pitching over ruts until we regained the narrow track. Callum sat beside me, already plotting the route south on an Ordnance Survey road map. Elliot and Nathan followed close behind in the second vehicle, their headlights visible in my mirror.

The first hour passed in silence. Edith remained in the rear with her hands folded in her lap and that same empty smile on her face. I kept checking the mirror, watching for something I could not have named.

Something that would explain who, or what, she was.

"It'll be eight or nine hours to Whitby if we don't encounter trouble," Callum said at last. "We should regain the main road in about forty minutes."

I nodded, keeping my eyes on the track.

"We'll need diesel on the way. There's a twenty-four-hour service station near Aviemore."

"You may call me Edith," our passenger said suddenly.

Her voice had a pleasant lilt, like someone's favourite grandmother.

"There's no need to speak around me. I'm simply pleased to have company after so long."

Callum gave me a quick look. I knew exactly what he was thinking. If she had truly been alone since 1963, how could she seem so ordinary? She was neither dirty nor thirsty, and she did not behave like someone deprived of human contact for sixty years.

"How did you survive out there, Edith?" Callum asked, twisting slightly in his seat. "That field is miles from a reliable water source."

Her smile remained fixed.

"Oh, I manage. I always have."

It was not an answer. I concentrated on driving as the ground opened around us into peat, scrubby heather and exposed rock. The sun was beginning to sink.

We reached the main road without incident and settled onto the smoother route that would carry us south through the Highlands. The quiet drive began to reassure me. Perhaps this would prove to be nothing more than a peculiar transport task rather than the impossible situation it appeared to be.

That hope lasted about four hours.

The first sign was the radio. We had been listening to one of the few local stations we could receive clearly. Halfway through a song, the broadcast stopped and changed to classic rock, although nobody had touched the controls. Before Callum could reach for it, the set changed again to BBC news, then static, then a classical performance.

"Reception must be poor out here," Callum said, reaching to switch it off.

The broadcasts continued after he pressed the power button. Static, news, music and more static cycled through the frequencies without human input.

In the rear, Edith began humming quietly, apparently oblivious to the malfunction.

The temperature changed next. The ventilation had been running at a steady setting since we left the field. Without warning, the air from the vents became bitterly cold. My breath clouded in front of me.

Callum rubbed his arms and stared at the controls.

"What the hell?"

He turned the dial. Nothing happened.

Then the air became stiflingly hot. Sweat sprang at once across my forehead and upper lip. I wiped it away with the back of my hand, struggling to keep my attention on the road.

"The system's gone haywire," Callum said, working the controls. "Nothing's responding."

The temperature swung between extremes for the next ten minutes, then returned to normal as if nothing had happened. The radio fell silent.

I looked into the mirror to check Edith.

The rear seat was empty.

I twisted round at once. Edith was sitting exactly where she had been all along, watching me with mild curiosity.

"Is everything all right, Sergeant?" she asked.

I faced the road again and tightened my grip on the wheel.

"Yes, ma'am. Just checking that you're comfortable."

Seconds later, I glanced at the mirror. The seat was empty again, though I could hear Edith humming softly behind me and knew she remained inside the vehicle.

Callum had noticed nothing unusual about her. He was occupied with trying to raise Elliot and Nathan through the Bowman set to discover whether their vehicle was suffering similar faults.

"Nathan, Elliot, this is Mercer Two. Radio check."

Only static answered.

He tried again. There was still no response.

I drove on, attempting to understand what was happening. I told myself exhaustion was distorting my sight. We had been awake for nearly twenty-four hours, sustained by tea, caffeine and adrenaline. Deep down, however, I knew it was not tiredness.

After another half-hour, we found an A-road lay-by. It was little more than a gravelled pull-in with two picnic tables and a basic public loo. I indicated and turned in. The second Foxhound followed.

"We'll take fifteen minutes," I told Callum. "I need to stretch my legs."

Outside, the lingering warmth of the day struck me after the cooled interior. The sun sat low over the mountains, turning the moor copper and orange. I drew a deep breath, trying to clear my head.

Elliot walked across from the second Foxhound while Nathan remained behind the wheel.

"Everything all right up front?" Elliot asked quietly. "We lost radio contact with you."

"We've had equipment problems," I said, keeping my tone neutral. "The radio's cycling through stations, and the temperature controls have been playing up."

Elliot nodded, his expression becoming more serious.

"Nathan's compass is behaving strangely. The needle keeps turning as though it can't find north."

I looked towards the Foxhounds. Edith was still sitting in the rear of mine, gazing through the window with the same serene expression.

This was my opportunity to get some genuine information from her.

"Keep watch out here," I told Elliot and Callum. "I'm going to speak to our passenger."

I approached the Foxhound and opened the rear door.

"Edith, would you like to step out and stretch your legs?"

She smiled up at me.

"That would be lovely."

I offered my hand and was again startled by how little she weighed as I helped her down. She accompanied me to one of the picnic tables, moving with a grace that did not suit her apparent age.

"It's a beautiful evening," she said, looking across the Highland moor.

The setting sun threw her profile into silhouette and, for a moment, made her seem much younger.

"Edith," I said, deciding to be direct, "where have you been all these years? Since 1963?"

She turned towards me. For an instant, the sunlight seemed to catch a yellow tint in her eyes.

Then she blinked, and they were pale blue again, clouded with age.

"I was taken," she said simply.

Her voice remained pleasant, but something beneath it had changed. Each word sounded measured.

"They wanted to study me, but I escaped. I've been waiting for the right people to take me home."

The hairs rose along the back of my neck.

"Who took you? Who are they?"

Edith looked beyond me, focusing on something far away.

"Look at the birds," she said, pointing towards the empty sky. "Aren't they beautiful?"

I looked, even though I knew there were no birds. There was only the enormous Highland sky, orange in the sinking light.

"Edith, there aren't any-"

"They come and go," she interrupted, her smile unchanged. "Like people. Like time."

She placed her hand over mine, and I resisted the urge to recoil. Her touch was cold, as if she had been sitting in a refrigerated room rather than a warm vehicle.

"We should continue our journey. Night is coming."

She rose and walked back to the Foxhound without waiting for my reply, leaving me with more questions than I had begun with.

Callum joined me as I watched her go.

"Any luck?"

"She says she was taken and studied. She wouldn't say by whom. Then she began talking about birds that weren't there."

Callum pulled a face.

"Perhaps she's confused. Trauma, age, exposure or dehydration could all cause hallucinations."

I wanted to accept that explanation, but none of it accounted for what I had seen, or failed to see, in the mirror.

"Let's get moving," I said. "I want to reach Whitby before dawn if we can."

We returned to the vehicles. Edith sat in precisely the same position as before, as though she had never left it. I started the engine and rejoined the road, with the second Foxhound behind us.

That was when the communications equipment truly began to fail.

The radio switched itself on, but instead of music or news, voices emerged from it in languages I could not identify. Some sounded faintly European. Others were wholly foreign to me, filled with guttural stops and clicking sounds unlike anything I had heard during my deployments.

Callum turned the dials, but the broadcast did not change.

"What is this?" he muttered.

From the rear seat, Edith began humming again. Her melody mingled with the voices from the radio, creating a sound that prickled across my skin.

The secure Bowman set crackled into life by itself.

"...compass is completely useless," Nathan's voice said, arriving halfway through the sentence. "It's just spinning in circles."

"Same here," Callum replied after checking ours.

The needle revolved continuously, never settling on a heading.

"Maintain visual contact," I said into the handset. "Stay on the road. As long as we follow the signs, we'll keep moving south."

Night closed over us as we drove. Stars filled the clear Highland sky.

I had spent enough nights outdoors to recognise the principal constellations, but I could not find any of them. The familiar patterns had disappeared, replaced by arrangements I had never seen.

I rubbed my eyes, telling myself that fatigue was confusing me. When I looked again, the stars remained wrong.

It felt as though we were travelling beneath somebody else's sky.

In the rear, Edith continued her quiet song. She watched the unfamiliar stars through the window with the smile of someone who recognised them.

Near midnight, the lights of Aviemore appeared ahead, a scatter of civilisation against the Highland darkness. My eyes ached from hours of watching the road, and the tea Callum and I had been drinking since our last stop had gone cold.

"Service station ahead," Callum said, pointing towards a twenty-four-hour site beside the A9.

A sign advertised diesel, unleaded and the best tea on the A9. I indicated and pulled in, with the second Foxhound close behind. Under the fluorescent lights, everything looked unnaturally stark. Several lorries stood at the far end of the car park, their engines idling while the drivers slept.

"Let's refuel and get fresh tea," I told Callum. "We've still got several hours before Whitby."

I turned to check on Edith. She sat exactly as she had for most of the journey, hands folded neatly in her lap, staring through the window with the same peaceful expression.

"Would you like anything from the shop, ma'am?"

She faced me with her grandmotherly smile.

"No, thank you, dear. I don't require anything."

The phrasing unsettled me. Not that she was not hungry, or that she did not need anything at present. She did not require anything, as though she were a machine that needed no fuel.

Callum began filling the tanks while I went inside to pay and fetch tea. The service-station shop was empty apart from a bored cashier watching a small television behind the counter. Local radio played softly through the ceiling speakers. After the strangeness of the journey, the ordinary scene seemed almost unreal.

I filled two large cups with strong builder's tea and collected cereal bars for the team. Once I had paid, I returned outside.

The cold night air touched my face as I pushed through the door. I stopped for a moment and looked at our vehicles beneath the service station's bright lights. Callum was finishing with the first Foxhound. Nathan stood beside the second, stretching his legs. Elliot was circling the edge of the site, alert as ever.

Edith remained in the rear of my vehicle.

I walked towards it, careful not to spill the tea. As I reached the driver's side, I glanced at the mirror from habit.

I stopped dead.

The reflection was not Edith.

Where the old woman should have been, I saw something else entirely. It was tall and unnaturally thin, with paper-pale skin stretched tight across an elongated face. Its eyes caught the fluorescent light and shone yellow, their pupils narrow and vertical like an animal's.

Its mouth was slightly open, revealing rows of needle-like teeth. There were far too many of them to fit inside a human jaw.

My hands went numb. One cup slipped from my fingers and struck the pavement, bursting open. Hot tea soaked my boots, but I scarcely felt it.

I spun towards the rear seat.

Edith sat as before, an ordinary elderly woman in a faded green wool dress, her white hair arranged neatly in its bun. She tilted her head in mild enquiry.

"Is everything all right, young man?" she asked, her voice warm with concern.

I looked from her to the mirror. It now held her normal reflection, nothing more than a harmless old woman.

My mouth had gone dry.

"I dropped the tea. Sorry."

"Oh, dear," she said sympathetically. "How clumsy. Still, accidents happen."

Callum looked across from the pump.

"You all right, sergeant?"

"Fine," I called, forcing my voice to remain steady. "It slipped."

I left the spilled tea where it was and walked towards Elliot, who had stopped near the edge of the car park. He stood just beyond the reach of the brightest lights and looked tense.

"Elliot," I said quietly as I approached. "Can we talk?"

He nodded, his gaze moving constantly across the forecourt.

"Something's wrong with her," he said before I could begin. "With Edith."

The fact that he had reached the same conclusion made my stomach tighten.

"What have you seen?"

He hesitated, as though speaking the words would make him sound unhinged.

"Her shadow doesn't move properly. Back at the lay-by, while you were talking to her, I watched it on the ground. It stretched far too long, right across the gravel."

His voice dropped further.

"And it moved when she didn't."

I looked towards the Foxhound. From that distance, Edith appeared entirely normal.

"I saw something in the mirror," I told him. "Her reflection wasn't human. It was tall and thin. Yellow eyes, vertical pupils, teeth like needles. But when I turned and looked directly at her, she was normal."

Elliot did not seem surprised. He merely nodded, as though I had confirmed what he already feared.

"What the hell is happening?" I asked, more to myself than to him.

"No idea," Elliot replied. "But I know what I saw, and now you've seen something as well."

I made a decision.

"We keep watch on her for the remainder of the journey. Whatever happens, one of us stays awake and observes her at all times."

"Agreed."

"What about Nathan? Has he noticed anything besides the compass?"

"Not that he's mentioned."

I nodded.

"Keep this between us for now. I don't want to unsettle everyone without cause. We still have a task to finish."

We rejoined the others. I returned to the shop to replace the spilled tea, taking care not to look into any reflective surface on the way back to the vehicle.

Ten minutes later, we were on the road again. Callum took the wheel, while Elliot and Nathan followed in the second Foxhound. I sat in the passenger seat but kept turning to check on Edith.

About an hour after we left Aviemore, she began making another peculiar sound. It was unlike any song I had heard. There was no true melody, only a sequence of notes and syllables that repeatedly approached meaning before turning in impossible directions.

It was not unpleasant, yet it filled me with a grief so profound that I could hardly breathe.

As she made those sounds, images flashed through my mind.

A young woman standing alone in a field.

An empty house with strange windows.

A child lost on a bare moor.

They were not my memories, but they felt intimately personal, as though someone had placed them directly inside my head.

"You look troubled, Sergeant," Edith said, ending her song.

I realised I had been staring at her.

"Just tired, ma'am."

"The road takes its toll," she said with a knowing smile. "But we're drawing closer now."

I turned towards the road and watched it emerge in the headlights.

That was when I first noticed the landscape changing.

A tall blade of rock appeared against the night sky to our right, rising at least fifteen metres above the moor. I blinked and it vanished. In its place stood a low mound covered in heather.

"Did you see that?" I asked Callum, pointing to where the formation had been.

"See what?"

He kept his attention on the road.

I shook my head.

"Nothing. Thought I saw something."

It happened again twenty minutes later. The moon had been high above us, but without warning it hung close to the horizon, as if hours had passed in an instant.

The stars changed whenever I looked away. Constellations I recognised appeared and vanished. The road itself began to alter. I would blink and the stretch ahead would be entirely different, a bend replacing a straight section or a steep rise appearing where the ground had been level.

Even the signs were wrong. One gave a destination as seventy-three miles away; the next, only moments later, reduced the distance by twenty-five miles. I kept checking the odometer, trying to calculate how far we had travelled.

Nothing made sense.

Sometimes ten minutes of driving carried us forty miles. At other times, we travelled for what felt like an hour while the odometer scarcely changed.

"Callum," I said quietly, "does this road look right to you?"

He frowned.

"What do you mean?"

"Does it match the route we planned? The junctions, the landmarks, the distances on the signs?"

Callum glanced at the map on his lap and then at the road.

"Seems right to me. At this rate, we should reach Whitby at about 04:00."

I could not tell whether he genuinely failed to notice the changes or had chosen to ignore them, as he had seemed to do with the radio and the temperature. Perhaps that was how he coped - by pretending that everything remained normal.

Edith's humming seemed to grow louder, though she was making no more noise than before. It was as if the sound existed both inside and outside the Foxhound, surrounding us in a bubble of vibration. The sadness it stirred in me deepened. I began thinking about Basra, about the night operation that had gone wrong and the civilian I had killed by mistake in the darkness, a man who had simply been in the wrong place at the wrong time.

I had covered it up. I had reported that our patrol had come under fire when it had not. Nobody knew the truth. Nobody except me.

Why was I thinking about it now?

A hand settled on my shoulder. Edith had leant forwards from the rear seat, her cool fingers resting lightly on my MTP uniform.

"Your secret is safe with me, Sergeant Mercer," she whispered.

A burning sensation spread from her touch, so intense that I nearly cried out. It was not exactly pain. It was more like ice pressed to bare skin, cold enough to feel hot. I pulled away and turned towards her.

"What did you say?"

Edith smiled, her eyes catching the instrument lights. For a fraction of a second, they looked yellow again.

"I said we must be getting close now," she replied, her voice pleasant and ordinary.

She settled back and resumed her humming. Callum gave me a concerned look but said nothing. My shoulder continued to burn where she had touched me, the sensation penetrating my uniform. I rolled it, trying to shake off the feeling, but it would not go.

Outside, the Highland landscape kept changing in ways that made no sense. A low ridge appeared against the night sky. As we approached, it became a mass of exposed rock, then a stand of dead trees, and then vanished altogether. I kept watching Edith in the rear-view mirror, searching for any trace of the creature I had seen reflected at the service station.

She still looked human, but I was beginning to notice small things that were wrong. Her movements were too smooth. She did not blink as often as a person should. She remained perfectly still for far too long. The humming continued, mingling with my thoughts and bringing strange images with it: ancient places I had never visited, people in old-fashioned clothes standing before the house Edith had described in Whitby, and yellow eyes watching from the dark.

The burning in my shoulder was worsening. I rubbed it, shifted in my seat and even pressed my cold tea flask against it, but nothing helped.

Throughout it all, Edith watched me from the rear seat with a peculiar smile, as though she knew something I did not. She was in no hurry. She had done this before.

We were still hours from Whitby, but I knew that whatever Edith was, and whatever she intended, we were already too deeply involved to turn back.

The first grey light was spreading across the sky when we reached the outskirts of Whitby. The North Yorkshire town looked ordinary at that hour: a scattering of illuminated windows, rows of sleeping houses and early-shift workers making their way towards their jobs. Nothing appeared strange, which somehow made our journey feel even more wrong.

"Take the next turning," Edith said from the rear seat, her first words in more than an hour. "Hawthorn Lane is just ahead."

Callum had been driving for nearly two hours. He followed her directions while Elliot and Nathan remained close behind in the second Foxhound, its headlamps bright in our mirrors. Whitby's main roads gave way to residential streets and then an older quarter of large houses dating from the late nineteenth and early twentieth centuries.

When we turned into Hawthorn Lane, the houses stood farther apart on broad, overgrown plots.

"There," Edith said, pointing towards a property at the far end. "Number 17. My home."

Callum slowed as we approached.

The house stood apart from its neighbours, set well back from the road behind what had once been a formal garden. It was now a wilderness of weeds, brambles and self-seeded trees, neglected for decades. The building was a large late-Victorian red-brick villa with cream-painted stonework, a narrow corner tower and a deep covered veranda. Whatever elegance it had possessed was long gone.

The cream paint flaked from the stone surrounds. Several windows had been boarded with weathered plywood. The veranda sagged in the middle and looked unlikely to bear much weight. Callum stopped beside the kerb and checked the address on his mobile.

"This can't be right," he said, looking from the details on the screen to the derelict villa. "Nobody lives here."

Edith's reflection in the rear-view mirror wore a mild, pleasant smile.

"This is my home," she repeated firmly.

I reached for the secure Bowman radio. I needed confirmation that we were genuinely expected to leave a vulnerable elderly woman at a plainly abandoned property.

"Pennant Zero, this is recovery team. We have reached the delivery point, but the location appears uninhabitable. Request instructions. Over."

The radio crackled. After all our earlier communication failures, the reply came through with surprising clarity.

"Recovery team, complete the task as ordered. Acknowledge. Over."

I looked at the house again.

"Pennant Zero, the structure appears abandoned. Request authority to take the subject to hospital or a council shelter instead. Over."

"Negative, recovery team. Complete the delivery exactly as directed. That is an order. Out."

The response was final. I replaced the handset and turned to Callum.

"We have our orders."

He nodded, though his expression showed the same doubt I felt.

We got out, and I walked round to help Edith. The second Foxhound stopped behind us. Elliot and Nathan climbed down, staring at the house in open confusion. As we gathered by the kerb, I noticed movement in the neighbouring properties.

Curtains shifted at windows. A front door opened and quickly closed. The whole street seemed to be watching, but nobody approached.

Edith stood beside me. Her faded green wool dress hung perfectly still while the morning breeze stirred my uniform. She gazed up at the villa with the fond smile of someone seeing a beloved home, not a ruin.

"Let me speak to one of the neighbours," I told Callum. "Stay with her."

An elderly man had appeared on the veranda of the house opposite. He looked about eighty and wore pyjama bottoms with a cardigan despite the chill of the morning. He stared at us with a mixture of curiosity and alarm. I crossed the road, keeping my manner reassuring.

"Good morning, sir. Sergeant Mercer, British Army. We're here under official orders."

His eyes darted towards Edith and then returned to me. The colour drained from his face.

"What's the Army doing at that old place?" he asked, his voice trembling slightly.

"We've been instructed to bring this woman to the address," I explained, gesturing towards Edith. "She says it is her home. Do you know who lives there?"

The man gripped the veranda rail.

"Nobody's lived there since the Harrow family in the sixties." He leant closer and lowered his voice. "Edith Harrow went missing in August 1963. Police, volunteers and search dogs brought up from York looked for weeks."

A chill passed through me as his words sank in.

"Missing since 1963," I repeated, remembering what Edith had said in the field. "Since 1963."

"That's right. Her husband, Arthur, kept the place up for years, hoping she'd return. After he died, it was left empty. The family tried to sell, but..."

He broke off and looked uncomfortable.

"But what?"

"Nobody would buy it. People round here say the place isn't right. Noises in the night. Lights when there shouldn't be any. You know how people talk."

I thanked him and returned to the team, trying to keep my expression neutral. Elliot caught my eye as I approached, asking a silent question. I gave a slight shake of my head. Not now.

By the time I reached them, Edith was already walking towards the house. She crossed the uneven garden with surprising steadiness, moving through the long grass without hesitation. We followed. At the foot of the veranda steps, she stopped.

The timber was rotten and unsafe.

"Ma'am," I began, "I don't think those steps will-"

She turned towards me. For an instant, her eyes caught the early morning light with that unnatural yellow gleam. Then she smiled and climbed as though the steps were newly built. The wood did not creak beneath her.

We followed more cautiously, testing each board before committing our weight. Elliot remained close to Edith while Callum, Nathan and I spread out, forming a loose perimeter from habit rather than in response to any visible threat.

Edith reached into the pocket of her dress and produced an old brass key with a worn trefoil-shaped bow. The front door was warped in its frame, its wood split and eroded by years of weather. Any functioning lock should have seized long ago.

She raised the key towards it.

Before the metal touched the lock, the door swung inwards by itself. Hinges that should have been rusted opened without a sound.

Callum muttered a curse behind me.

I kept my eyes on Edith as she stood in the doorway, outlined against the darkness within. She turned to face us, and her expression changed. The grandmotherly warmth vanished, replaced by something ancient and knowing. When she spoke, her voice was deeper, seeming to come from every part of the house at once.

"Thank you for bringing me home," she said. "You should leave now."

It was more than a dismissal. It was a warning.

I stepped back, gripped by a certainty that something was terribly wrong, worse than anything I had encountered in combat.

"Everyone back to the vehicles," I ordered.

Callum and Nathan needed no second instruction. They were already descending the steps. Elliot hesitated, looking between Edith and me.

"Mercer?" he said, the word a question.

"Go. I'm behind you."

As Elliot turned away, Edith called to me.

"Daniel."

Hearing my first name stopped me cold. I turned.

She was beside me.

A second earlier she had been standing in the doorway. Now she was so close that I could feel the unnatural chill radiating from her body.

"I see what you did near Basra," she whispered, her breath like winter against my ear. "I know what you're hiding."

The world seemed to tilt beneath me. The night operation, the civilian, the false report - nobody knew. I had never told my commanding officers, my team or anyone else.

Edith smiled. There were too many teeth in her elderly face, and all of them were unnaturally white.

"Your secrets are safe with me, Daniel. For now."

I backed away and nearly stumbled down the steps in my haste to escape her. Edith remained in the doorway, watching with that knowing smile as I rejoined the others beside the vehicles.

"What did she say to you?" Elliot asked.

I shook my head. I could think of no answer that would make sense. How could I explain that this woman - this thing - knew what I had done half a world away, something no other person could possibly know?

As we climbed into the Foxhounds, I looked back at the villa.

Edith still stood in the doorway, her faded green dress visible against the blackness inside. As I watched, she stepped backwards into the dark. The door swung shut by itself.

The return journey to Catterick felt longer than the drive to Whitby. Nobody spoke as we left the town behind.

The North Yorkshire moors lay stark beneath the morning sun. The radio remained silent. Nathan sat rigidly in the passenger seat of my Foxhound, staring straight ahead with his jaw clenched. Callum drove, his expression blank, concentrating on the road.

In the mirror I could see the second vehicle following, with Elliot at the wheel.

My shoulder still burned where Edith had touched me. I rolled it now and then, searching for relief, but the pain remained as a reminder of what had happened.

Her words would not leave me.

I see what you did near Basra. I know what you're hiding.

Nobody knew about that night. Not my commanders. Not my team. I had written the report describing the civilian as a hostile and claiming that the patrol had come under fire. The man had merely emerged from a doorway at the wrong moment, when I was keyed up and my finger too quick on the trigger. The official account recorded a lawful engagement.

I knew the truth.

And somehow Edith knew it too.

We stopped only for diesel or to change drivers. We spoke only about practical things: the distance to the next petrol station, whose turn it was to drive and the quickest route back to Catterick.

Nobody mentioned Edith, the villa or anything we had experienced during the previous two days.

By the time we reached Catterick Garrison, the sun was setting on the second day. We parked the Foxhounds, signed our weapons back in and completed the vehicle and mission paperwork. Elliot folded the pristine wooden village-hall chair we had recovered from the field and left it secured in the second Foxhound. By the following morning, Defence personnel had removed it without explanation.

Major Harriet Vaughan was waiting for us with a clipboard, looking precisely as she had before the mission, as though nothing inexplicable had occurred.

"Mission completed as ordered, ma'am," I reported, keeping my voice level.

Vaughan nodded.

"Good work, Sergeant. Get your team some rest. Debrief at 09:00 tomorrow."

That was all. No questions about our passenger. No curiosity about the abandoned villa. Merely the routine acknowledgement of a completed task.

We returned to the accommodation block in silence. At the door to our shared quarters, Nathan finally spoke.

"I'm putting in for a transfer," he said, staring at some distant point. "First thing tomorrow."

I nodded. There was nothing else to say. I could hardly blame him.

Elliot stood in the doorway with his kitbag in one hand.

"I rang my commanding officer while you were finishing the vehicle returns. I've been granted emergency leave. My brother will collect me in an hour."

"You don't have to lie about why you're leaving," I said quietly.

Elliot met my eyes for the first time since Whitby.

"I'm not. I told him I needed to get away from something I'd seen. He didn't ask any questions." He lifted the bag. "I don't know when I'll be back."

After Elliot left, Callum unpacked his kit with meticulous care, returning each item to its usual place as if this had been an ordinary task.

"Do you want to talk about what happened?" I asked.

Callum looked up, his face empty.

"Nothing happened. We transported a vulnerable civilian to her requested destination. Mission complete."

He returned to his kit. The tension across his shoulders made it clear that the conversation was over.

That night I could not sleep. I lay on my bunk, watching the ceiling fan turn. Whenever I closed my eyes, I saw Edith's face.

Sometimes she was the kindly old woman. Sometimes she was the thing I had seen in the service-station mirror, with pointed teeth and yellow eyes.

I could not stop wondering how she knew about Basra. It was not merely that something had happened there. Plenty of soldiers carried stories from Basra. She knew the precise secret I had never shared, and every detail of the guilt and shame attached to it.

After two nights without sleep, I received a message ordering me to Building Seven, Room 203, at 14:00. The sender was identified only as "Operations command".

I arrived five minutes early in clean uniform and polished boots. The corridor was quiet, most of the offices empty. Room 203 bore no nameplate, only a small number beside the door.

I knocked.

"Enter," a voice called.

The office contained a desk and two chairs, nothing more. There was no computer, telephone or stack of files. Only a single buff folder lay on the desk.

Behind it sat a man I had never seen at Catterick. He wore a colonel's rank, and his uniform was immaculate. His grey hair was cut regulation-short. Deep lines weathered the skin around his mouth and eyes, but his gaze was keen and appraising.

"Sergeant Daniel Mercer," he said. It was not a question.

"Yes, sir."

I stood at attention.

"Stand at ease, Sergeant. Sit down." He indicated the chair opposite him. "I'm Colonel Malcolm Rook."

I sat with my back straight and my hands on my knees. Rook studied me before speaking again.

"Your mission report was incomplete."

"Sir, I reported everything required by procedure."

Rook did not answer immediately. He opened the folder and removed several photographs, placing them on the desk one at a time.

"These were taken yesterday."

I leant forwards.

The images showed the villa at 17 Hawthorn Lane. It was the same house where we had left Edith, but no longer the ruin we had seen. The red brick was clean, and the cream-painted stonework gleamed in the sunlight. The veranda stood straight and sound. The garden, previously choked with weeds, had become a clipped lawn bordered by neat shrubs.

It looked like a different property, or the same property restored to how it might have appeared sixty years earlier.

"That's impossible," I said. "The house was falling apart two days ago."

Rook laid out more photographs. They showed empty rooms with polished wooden floors and freshly painted walls. Across those walls were unfamiliar symbols and shapes, drawn in a dark reddish-brown liquid.

"Is that..."

I could not finish.

"Blood?" Rook supplied. "Yes, although tests indicate that it isn't human."

My stomach tightened. The patterns covered every wall in curves and jagged strokes. Some resembled distorted faces or pieces of bodies. Others were abstract designs I could not study for long without becoming dizzy.

"What is this?" I asked. "Who is she?"

Rook gathered the photographs into the folder.

"What you transported wasn't human, Sergeant Mercer. We identify it only as an ancient shape-shifter, sometimes called a walker in our records. There are uncertain connections to British traditions predating the Romans, but Defence does not claim to know its proper name, if it has one."

I remembered the yellow eyes in the service-station mirror, the moments when Edith's reflection had vanished and her impossible lightness when I helped her into the Foxhound.

"Defence has tracked this particular entity since its appearance in Edith Harrow's form in 1963," Rook continued. "Our records of related events go much further back."

"You knew what we were carrying?" My voice came out harder than I intended. "You sent us in blind?"

Rook's expression remained impassive.

"Would you have believed the briefing if Major Vaughan had told you the truth? Would your team have completed the recovery?"

I considered it. Would we have believed any of this? Or would we have assumed it was a psychological exercise, or that our superiors had lost their minds?

"Every sixty years, the entity must return to that dwelling place," Rook said. "We don't know why or what it does there. We do know that when it makes the journey on foot, it leaves devastation behind."

"What kind of devastation?"

"In 1843, before the Army took responsibility for the escort, it travelled from northern Scotland to the Yorkshire coast. Three coaching villages along its route were afterwards found entirely empty. There were no bodies, no blood and no evidence of a struggle. Meals stood unfinished. At one village primary school, lessons remained written on the blackboard. The people were simply gone, and the same symbols had appeared on the walls."

I remembered the way time and distance had twisted while Edith was with us: scenery changing, roads becoming impossibly short or long.

"So you transport it," I said as the arrangement became clear. "To minimise casualties."

Rook nodded once.

"Correct."

"And it accepts that?"

"It appears to. At the beginning of each cycle it adopts a human form at the recovery site, accepts an escort and permits itself to be conveyed to Whitby. In 2023 it used the identity of Edith Harrow, the woman who disappeared in August 1963. We cannot say whether the original Edith was transformed, replaced or connected with it from the outset. Nor do we believe it has literally sat in that field for sixty years, whatever it told you."

"Then what? It disappears for another sixty years?"

"That seems to be the pattern. It doesn't always use the same form. Sometimes male, sometimes female, and of different ages. But it always appears at the same starting point and always requires passage to the same destination."

I thought of Edith speaking to me at the house, revealing the secret I carried from Basra.

"It knows things," I said. "Things it shouldn't be able to know."

For the first time, Rook's expression shifted.

"Yes. It appears able to reach memories and secrets. Did it speak to you personally, Sergeant?"

I hesitated. Something prevented me from telling him what Edith had said.

"It knew my first name. None of us had given it our first names."

Rook watched me as though deciding whether to push further. At last he gave a small nod.

"The entity sometimes marks those who transport it. Those in whom it takes a particular interest."

The burn in my shoulder intensified as if responding to him. I resisted the urge to rub it.

"Your team has already begun to separate," Rook observed. "That isn't unusual. People respond to an encounter with the entity in different ways. Nathan wants a transfer. Elliot has taken leave. Callum is pretending nothing happened. And you, Sergeant Mercer? How are you responding?"

I looked again at the photographs of the restored villa and its blood-marked walls.

"I'm trying to understand it."

Rook closed the folder.

"Some things may not be intended for human understanding. Your task is complete. The entity is where it needs to be. That is what matters."

I stood, sensing that the meeting was over, but one question remained.

"Sir, why was my team chosen?"

Rook looked at me for a long moment.

"Report here tomorrow at the same time. There's more you should know, but you've heard enough for today."

I saluted and turned towards the door.

"Sergeant," Rook called.

I looked back.

"The burning where it touched you will fade in time."

I pulled my hand from my shoulder, only then realising that I had been rubbing it.

"How did you-"

"Tomorrow, Sergeant Mercer," Rook said, opening another folder that had not been on the previously empty desk. "14:00."

I walked back to the accommodation block with my thoughts racing: the markings, the inhuman passenger and Defence's long-standing arrangement to carry it south every sixty years.

Nathan had gone by the time I returned. His bunk was stripped and his locker empty.

Callum sat on his own bunk, carefully cleaning his sidearm.

"Where have you been?" he asked without looking up.

"Meeting a colonel about the mission."

Callum's hand stopped for a second, then resumed its work.

"What mission?"

I looked at him properly. His expression was calm and his attention fixed on the weapon, but a muscle twitched in his jaw. His knuckles were white around the cleaning cloth.

"Callum," I said carefully, "you don't have to pretend it didn't happen."

He finally met my eyes.

"I'm not pretending anything. We transported a civilian. End of story."

He was terrified. He needed to deny what had happened because accepting it would destroy everything he believed about the world.

"All right," I said, backing away. "End of story."

That night I dreamt of Edith standing in the doorway of the red-brick villa, her eyes shining yellow in the darkness. She beckoned to me, smiling with too many needle-like teeth.

"I'll see you again, Daniel," she said, her voice echoing from a great distance. "In exactly sixty years."

I woke gasping, my shoulder burning as though someone had pressed a hot coal against it.

At 14:00 the next day, I returned to Building Seven, still thinking about my first meeting with Colonel Rook. The corridor was silent and most doors were closed. I knocked on Room 203.

"Enter."

Rook sat behind the desk as before, but several old files bearing red security stamps were now stacked before him. He indicated the chair without expression.

"Sergeant Mercer. Good. Sit down."

I obeyed, noticing that my shoulder had begun burning the moment I entered. The pain was less sharp now, an ache throbbing with every heartbeat. I fought the urge to touch it.

"You asked why your team was selected," Rook said without preamble. "The answer is more complicated than you expect."

He opened one of the files and turned it towards me. Inside was a black-and-white photograph dated 1903. Four British soldiers in service dress stood before a field hospital tent. Between them was a young woman in a long white dress.

Her face was unremarkable except for her eyes, which reflected the camera light with unnatural brightness.

"This is the first documented military escort," Rook explained. "Before 1903, the entity made its own way to the destination, with catastrophic consequences."

I examined the photograph more closely. The woman was perfectly sharp and still compared with the slight motion blur around the soldiers. One man rested a hand on her shoulder while turning his face aside as if he could not bear to look at her.

Rook pushed another file towards me. It contained a photograph from August 1963. Four soldiers in battledress and early olive-drab combat clothing surrounded a middle-aged man in civilian clothes. He was smiling comfortably, but his eyes caught the light with the same unnatural gleam.

"Different appearance, same entity," Rook said. "We identify it through its route, its timing and the effects it has on its escorts."

He showed me the rest of the record. There were no impossible photographs from an age before cameras. The 1843 evidence included written accounts, sketches and a later photographic copy of a damaged charcoal portrait. The files for 1783 and 1723 contained journals, official correspondence and crude illustrations. In every cycle, the entity wore a different human form, but each artist had given it strangely luminous eyes.

"We don't know what it is or where it came from," Rook admitted. His clinical tone slipped enough to reveal genuine frustration. "Archival interpretations connect it with traditions in which parts of the Whitby headland and the surrounding moors were described as hallowed, forbidden or set apart. Those interpretations are uncertain. What we do know is that arranging its transportation saves lives."

He opened an older file whose edges were crumbling with age. Inside were handwritten accounts and rough sketches.

"In 1843, before formal military involvement, the entity walked from northern Scotland to its dwelling place in Whitby. Three coaching villages along the route were found entirely deserted."

The sketches showed abandoned homes, tables set with half-eaten meals and a village classroom with a lesson still chalked on the blackboard. There were no people. Not one body.

"Empty," I said, considering what that meant. "Not destroyed. No dead. Just empty."

"Exactly. There was no evidence of violence and no blood. Only abandoned buildings and the same markings you saw in yesterday's photographs."

I remembered the dark symbols covering the walls of the restored villa.

"What happened to the people?"

Rook closed the file.

"We don't know. They were never found."

I tried to imagine three entire villages vanishing without a trace. The thought made my skin crawl.

"So every sixty years, you send a team to collect this thing and drive it where it wants to go." I leant forwards. "Why weren't we briefed properly? We went in blind."

Rook fixed me with his sharp, measuring stare.

"Would you have believed the truth? Would you have completed the task?"

Silence settled between us.

I thought of Edith's weightless body as I helped her into the Foxhound, her absent reflection and the impossible landscape through which we had driven. If someone had described those things beforehand, I would have assumed they were mad.

"No," I admitted. "I wouldn't have believed it."

Rook nodded as though I had confirmed something he already knew.

"That's why the procedure remains unchanged. A vulnerable-person recovery under classified Defence orders, with minimal detail. The escort teams always return altered, but the entity reaches its destination without walking the route."

"Altered how?"

The burning in my shoulder intensified.

"The entity takes an interest in certain individuals," Rook said carefully. "Some escorts report unusual phenomena afterwards, especially those who hear their secrets repeated to them."

Edith's words echoed in my head.

I see what you did near Basra. I know what you're hiding.

Rook watched me closely.

"Did it speak to you personally, Sergeant? Did it tell you something nobody else could know?"

I held his gaze but remained silent. Instinct told me that sharing what Edith knew about Basra would be dangerous. Not because Rook might report me, but because saying it aloud would somehow strengthen the link between us.

After a moment, he continued without pressing me.

"Those who are marked often report sensory anomalies. They see things that cannot be present. Objects move. Dreams feel more substantial than waking life."

That frightened me more than I wanted to show.

"Marked?"

Rook glanced directly at the place on my shoulder where Edith had touched me.

"It leaves an impression upon some escorts. We don't fully understand it."

"Is it permanent?"

"Usually not. The effects generally fade within a few months." He paused. "Usually."

The qualification hung between us, heavy with everything he was withholding.

"What about my team? Nathan, Elliot and Callum?"

"They had different levels of contact. Their reactions are familiar. Some deny the event, some flee from it, and some try to understand."

Rook gathered the files.

"Your desire to understand places you in a minority, Sergeant Mercer."

"What happens now? What am I meant to do with this information?"

"Nothing. Your task is complete and the entity is where it needs to be. In all likelihood, it will remain dormant until the next cycle in 2083."

Rook stood, signalling the end of the meeting.

"If you experience further phenomena, report them directly to me. Otherwise, resume your normal duties."

I rose, still struggling to absorb what I had learnt.

"Sir, yesterday you said there was a reason my team was selected. You still haven't explained it."

Something softened around Rook's eyes.

"No, I haven't. That is for tomorrow's meeting. Fourteen hundred."

I saluted and left with my mind full of the entity's appearances through British history, always following the same route from Caithness to Whitby every sixty years, always betrayed by its gleaming eyes.

The accommodation block was quiet when I returned. Callum was gone, probably to the range or the gym, anywhere he could keep busy enough not to think about Edith. Nathan's bunk remained empty, and Elliot was still on leave.

The room felt larger without them.

I sat on my bunk, trying to make sense of everything Rook had told me. The burning in my shoulder had diminished to a manageable ache.

Then I noticed something on my pillow.

It was a smooth grey stone about the size of a ten-pence piece, dark grey with faint red lines. It looked water-polished and impossibly old. I was certain it had not been there when I left for the meeting.

I picked it up carefully.

The instant my fingers touched it, the room vanished.

I stood on an ancient Highland moor beneath a strange sky filled with stars I did not recognise. Peat, heather and exposed rock stretched towards distant black mountains. Ahead of me walked a tall, unnaturally thin figure with paper-pale skin stretched tightly over an elongated frame. It moved across the coarse grass without bending a single stem or leaving any sign of its passage.

As though aware of me, it turned.

Yellow eyes with vertical pupils stared straight into mine. Its face was too long, its features too sharp and its mouth too wide, packed with tiny needle-like teeth.

I knew immediately that this was Edith's true appearance, the same creature I had glimpsed in the service-station mirror.

Then I was back in the accommodation block, sitting on my bunk and breathing hard. The stone slipped from my fingers and struck the floor.

It broke into fine grey dust, spreading across the concrete.

I stared at it, unable to move or understand what I had seen. Was it a vision of the creature thousands of years in the past, or something still to come?

The dust looked exactly like the residue I sometimes found on my bunk in the morning, the dust I had wiped away without ever wondering where it came from.

That night I lay watching the ceiling fan turn slowly, trying not to think about the stone. Sleep came with difficulty, and when it did, I dreamt.

I stood in a dark room without doors or windows. Yellow eyes watched from every shadow. Not one pair, but dozens, then hundreds, all with the same vertical pupils and the same hungry attention.

I could not move or speak. I could only stand as the eyes drew closer and the shadows advanced from every direction.

I woke drenched in sweat, the sheets twisted around my legs. The room was dark apart from the faint glow of the emergency exit sign spilling beneath the door.

For a moment I thought I was still dreaming. In the darkest corner stood a pair of yellow eyes, watching me.

I blinked, and they disappeared.

One month after leaving Edith at the villa, I applied for leave to visit Whitby. The form remained on my desk for three days before I submitted it. I was not certain that I truly wanted to return.

When I handed it to my commanding officer, I expected questions. Why Whitby? What business did I have there?

Instead, the officer signed without looking up, almost too quickly.

Someone must have warned them I would ask.

My shoulder hurt less by then, although it still troubled me at night. Two weeks after our final meeting with Rook, Callum requested memory suppression and a transfer to Tidworth Camp. Elliot never returned from emergency leave in the ordinary sense; he joined the classified unit responsible for the escorts. Nathan simply vanished. There were no transfer papers and no discharge documentation, only an empty bunk and a record stating that he had been reassigned under classified Defence authority.

I packed lightly: clothes, toiletries, my laptop and the notes I had made about everything Rook had told me. The drive from Catterick to Whitby would take little more than an hour, following the final stretch of the same route we had travelled with Edith.

I left before dawn, while the roads were empty apart from lorries and the occasional car. The journey felt different this time. No radio stations changing by themselves, no unnatural shifts in temperature, no strange landscapes appearing and vanishing. Just ordinary roads and towns exactly where they ought to be.

I reached Aviemore around midday and stopped at the same twenty-four-hour service station on the A9 where I had seen Edith's true form in the mirror.

I filled the pick-up with diesel, bought a sandwich and stood looking at the glass along the side of the building, half expecting to see something impossible in it. Nothing happened. Only my own exhausted face stared back at me.

The rest of the drive felt shorter and reassuringly normal.

Several hours later, I passed the sign for Whitby and followed the quiet streets towards Hawthorn Lane. I parked across from number 17 and sat in the pick-up, looking at the house.

The late-Victorian villa appeared exactly as it had when we first brought Edith there. The red brick was blackened by age, the cream-painted stonework flaked and stained, and most of the windows were boarded over or broken. The deep covered veranda sagged in the middle, while the narrow corner tower leaned above it like a watchful head.

The garden was overgrown again. There was no sign of the restored villa Colonel Rook had shown me in his photographs.

Had those photographs even been real? Or had Rook shown them to me for some other reason?

I climbed out and stood on the pavement, studying the house. The front steps Edith had mounted so easily now looked even more rotten. The door stood slightly open, but the hall beyond was dark.

I considered crossing the road, climbing those steps and looking inside, but something stopped me.

I was not ready for whatever might be waiting there.

"Are you looking for someone?"

I turned. An elderly woman was watching me from the neighbouring garden. She wore gardening gloves and held a pair of secateurs in one hand and a basket of cut roses in the other.

Her face was deeply lined, but her eyes were alert and curious. She had been working beside the house next door, partly concealed by a tall hedge.

"Sorry," I said. "I was just... I knew someone who used to live here."

She tilted her head and examined me more closely.

"Army, aren't you? I can tell even without the uniform. My Harold was Army too. Served during the Malayan Emergency."

"Yes, ma'am. I'm on leave."

She nodded and set down her basket.

"Dorothy Bell. I've lived next door since 1956." She pointed towards the villa. "Nobody's lived there for decades, though. Not since the Harrows."

I stepped closer.

"Actually, they're the people I'm interested in. Edith Harrow in particular."

Something passed across Dorothy's face. Surprise, perhaps, or suspicion.

"How would you know Edith? She disappeared long before you were born."

"Family connection," I lied, the words coming easily. "My grandfather mentioned the Harrows. I was passing through and thought I'd see the house."

Dorothy pulled off her gloves.

"Well, that's the first time anyone's asked about Edith in years. Would you like some tea? I've just made a pot, and it's about time I stopped for the afternoon anyway."

Ten minutes later, I was sitting at Dorothy's kitchen table with a steaming mug before me. Her house was tidy but crowded with the possessions of a long life. Photographs covered the walls, ornaments occupied every surface and the furniture looked worn but comfortable. The room smelt of potpourri and freshly baked biscuits, which she had insisted I try.

"So," she said, lowering herself into the chair opposite with a slight wince that suggested arthritis, "what's your name, young man?"

"Daniel Mercer."

"And you said your grandfather knew the Harrows?"

I nodded, keeping to my story.

"He mentioned them a few times. I'm trying to piece together some family history."

Dorothy watched me over the rim of her mug, her eyes narrowing slightly.

"Well, I knew Edith and Arthur quite well. We were neighbours for seven years before she disappeared. Arthur was never the same afterwards."

"What happened to her?" I asked, although Rook had already told me the essentials.

Dorothy rose with a small grunt and crossed to a cluttered writing desk in the corner. She searched through a drawer, then returned with a small photograph album and a yellowed newspaper cutting.

"17 May 1963," she said, sliding the cutting towards me. "Edith went to the local supermarket and never came home. Arthur reported her missing when she hadn't returned by nightfall."

The headline read: LOCAL WOMAN MISSING - FOUL PLAY SUSPECTED.

Beneath it was a grainy photograph of Edith Harrow, a pleasant-looking woman in her forties. Her hair was styled in the fashion of the early 1960s and she was smiling at the camera.

"They searched for weeks," Dorothy continued. "Local police, volunteers, even search dogs brought from York. Nothing. Her car was found outside the supermarket with the shopping still inside. There were no signs of a struggle and no witnesses. She simply vanished."

"What did people think had happened?" I asked, studying the photograph.

"Oh, there were theories. Some thought she'd run off with another man, though anyone who knew Edith understood that was nonsense. She adored Arthur. Others thought she might have been abducted or had an accident somewhere remote. The most persistent rumour was that she'd been murdered and her body hidden so well that it would never be found."

Dorothy shook her head.

"Poor Arthur. He never stopped hoping she would come back."

"He stayed in the house?"

"Until the day he died in 1978. Fifteen years he waited for her, keeping the house exactly as it had been on the day she disappeared. After he died, their daughter tried to sell it, but..."

Dorothy's voice trailed away.

"But what?" I prompted.

She took a sip of tea.

"Nobody would buy it. There were stories about the place. Strange noises. Lights in the windows when no one was there. One family actually moved in for a week, then fled in the middle of the night. They would never say what happened."

She waved a dismissive hand.

"Small-town gossip, probably. Eventually, their daughter stopped trying to sell it. It has stood empty ever since."

I thought of what Rook had shown me: the images of the restored house and the symbols painted in blood across its walls.

"Has anything unusual happened there recently? In the past month, perhaps?"

Dorothy's hand stopped halfway to her mouth. She placed her mug on the table with deliberate care.

"Funny you should ask. About three weeks ago, Mrs Pritchard across the road rang the police about lights in the house. She said every window was glowing at around midnight, but by morning they had all gone dark again."

"Did the police investigate?"

"They did. They forced the back door because the front was locked tight. They found nothing except..."

She hesitated.

"Except what?"

"The officer who went inside was PC Martin Shaw. I've known him since he was in nappies. He said they found peculiar drawings on the walls, symbols of some kind, made with what looked like rust or old blood. They took samples, but I never heard what became of them."

The kitchen was warm, yet unease crept over me.

"Did PC Shaw say anything else about what he saw?"

Dorothy looked troubled.

"He said the inside was clean. Not dusty or crumbling as you'd expect after all these years. It was as though someone had been maintaining it. But when I asked whether I could see it for myself, he said no. He claimed the floors might collapse and the structure was unsafe. By the following day, he was saying he couldn't remember finding anything unusual at all."

We sat without speaking for a moment. I finished my tea while Dorothy opened the photograph album.

"I kept these," she said. "Edith was my friend. This is her and Arthur in front of the house when they first moved in."

The photograph showed a middle-aged couple standing proudly on the veranda. The villa had been handsome then, with clean red brick, fresh cream paint, intact windows and flowers spilling from window boxes. Arthur Harrow had one arm around Edith's shoulders, and both of them wore broad smiles.

"They were so happy," Dorothy murmured. "It was a terrible thing. Edith was the kindest person you could hope to meet. She brought soup whenever someone was ill, helped with activities at the parish church and worked herself to exhaustion during the Whitby regatta. She didn't deserve whatever happened to her."

She turned the page, revealing more photographs: Edith at a garden party, Edith and Arthur at the regatta, then a close view of Edith's face.

"This was taken about a month before she disappeared," Dorothy said. "Arthur kept it framed beside his bed afterwards."

I leant closer and felt the blood drain from my face.

Edith Harrow - the real Edith Harrow - stared back at me from the photograph. Her gentle face and pleasant smile were familiar from the newspaper cutting, but it was her eyes that terrified me. Caught by the camera's flash, they reflected yellow.

Exactly like the creature's eyes in the service-station mirror.

"Is something wrong?" Dorothy asked, noticing my reaction.

I tried to keep my voice steady.

"No. It's just... Before I came, I wondered whether Edith had any distinctive features. Something I might recognise from family stories."

Dorothy smiled.

"Funny you should ask. Edith had unusual eyes. Sometimes they caught the light in a peculiar way. In certain photographs they shone like a cat's. Arthur used to joke that there must be a wild animal somewhere in her family tree."

She tapped the photograph.

"You can see it in this one."

"Did she ever behave strangely? Do or say things that seemed out of character?"

Dorothy looked puzzled.

"Not that I remember. She was always even-tempered and dependable. Though..."

She paused and thought.

"There was one thing. Sometimes she knew things she couldn't possibly have known. She knew Judith Evans from church was pregnant before Judith had told anyone. Then there was the time she warned Frank Hales to keep away from his usual fishing place because the riverbank would collapse after the heavy rain. Sure enough, the whole bank gave way the following day."

Gooseflesh rose along my arms.

"Did people find that odd?"

"You know what small towns are like. People said she was intuitive. That she had good instincts."

Dorothy closed the album.

"Why do you ask?"

"Just curious," I said, trying to sound casual. "My grandfather said she was special somehow."

Dorothy nodded slowly.

"I suppose she was, in her way. The Harrows had lived around here for generations. Some of the older people used to say the family had a stronger bond with the headland and the moors than most."

I thanked Dorothy for the tea and the information, then made to leave before she could see how badly she had unsettled me.

At the door, she pressed the newspaper cutting into my hand.

"Take it," she said. "I've kept it all these years, but perhaps it belongs with someone who is still looking for answers about Edith."

I sat in the pick-up for a long time afterwards, staring at the abandoned villa across the road. The sun was setting, and I could not stop thinking about the yellow reflection in Edith Harrow's eyes.

The same reflection I had seen in the creature's eyes.

The same yellow eyes that sometimes watched me now from mirrors and shadows.

Was the Edith we had transported the same woman who vanished in 1963? Had she somehow changed during those sixty years into the thing I saw in the service-station mirror? Or had the entity taken Edith's form after causing her disappearance?

I remembered what Rook had said about it assuming different shapes throughout history: male and female, old and young, always making the same journey every sixty years. What if it did not select those forms at random? What if it chose people who already had some connection to it?

People whose eyes already shone yellow in photographs.

The villa's front door remained slightly open, revealing a strip of darkness beyond. For a moment, I thought something moved inside it, just beyond sight.

There was a flash of yellow, there and gone too quickly for certainty.

I started the engine and pulled away from the kerb, my hands shaking on the steering wheel. I had come looking for answers and found only deeper questions. My shoulder began to hurt as I passed the edge of Whitby.

It reminded me that whatever connection existed between Edith Harrow and the entity we had transported, I now shared some part of it.

The drive back to Catterick took several hours. I stopped only once, for diesel and a tasteless sandwich I barely touched. Dorothy's newspaper cutting rested on the passenger seat, Edith's smiling face looking up at me from the yellowed paper.

Night had fallen by the time I reached the garrison. The soldier at the gate barely glanced at my identification before waving me through. The car park beside the accommodation block was almost empty, holding only a handful of cars belonging to personnel who were not on duty or away for the weekend.

I took my holdall and the newspaper cutting and climbed wearily to my floor. The corridor lights produced that thin electrical hum peculiar to military buildings - not quite faulty, but never quite right.

The mark on my shoulder had begun aching again about an hour before I reached Richmond. It was a dull pain that intensified with every step towards my room.

When I opened the door, I found I was not alone.

Colonel Malcolm Rook sat on the edge of Callum Price's empty bed, his hands clasped between his knees. He was still in uniform despite the hour, every badge and fastening perfectly placed. He did not stand when I entered.

"You went to Whitby," he said.

It was not a question.

I closed the door and dropped my holdall on the floor.

"Yes, sir."

"Find anything interesting?"

I considered lying and claiming that I had merely wanted to see the house again. But Rook had a certain look in his eyes. He already knew the answers to his questions. He was testing me.

"I met a neighbour who knew Edith Harrow," I said, taking the newspaper cutting from my pocket. "She gave me this."

Rook accepted it and examined it without surprise.

"Dorothy Bell," he said. "She's been there a long time."

"You know her?"

"We monitor everyone connected to that house."

He returned the cutting.

"What else did you learn?"

I hesitated, then took out my mobile. Dorothy had allowed me to photograph the portrait in which Edith's eyes reflected yellow. I brought up the image and handed the phone to Rook.

"This is Edith Harrow," I said. "The real woman who disappeared in 1963."

Rook studied the image for a long time. His expression did not alter, but something shifted behind his eyes, as though he had just found what he had been seeking.

"Her eyes," I continued. "They reflect yellow, just like..."

"Just like the entity's eyes," Rook finished. "Just like what you saw in the mirror at that service station."

I sank heavily onto my bed.

"So what does it mean? Was she already like the thing we transported, or did it take her shape after she disappeared?"

Rook placed my phone carefully beside him.

"Some people are more susceptible to its influence. The Harrows lived in that area for generations. The entity may have chosen her because of her connection to the place."

"What place? That house? Whitby?"

"The headland and the surrounding moors. Archival accounts describe them as hallowed, forbidden or set apart, depending on how the old sources are interpreted. The traditions predate the Romans, and none of our translations is certain."

Rook straightened his already immaculate jacket.

"The entity is drawn to people who have connections to such places. People whose families have a history there."

Nausea tightened my stomach.

"Is that why I was chosen for the mission?"

Rook looked directly at me.

"Your grandfather, Edward Mercer, took part in the August 1963 escort."

I stared at him. I had never known my grandfather. He died before I was born. Mum rarely spoke about him, and when she did there was always a peculiar mixture of grief and anxiety in her voice.

"That isn't possible," I said automatically.

"Your grandfather served at Bovington Camp in Dorset. He joined a four-man detail that recovered the entity from northern Scotland and transported it to the house in Whitby. At the time it appeared as a middle-aged man."

"My grandfather never told my mother anything like that. I would have heard about it."

Rook's face relaxed slightly.

"He wouldn't have discussed it. In practical terms, he couldn't. The experience damaged him severely."

"What do you mean?"

Rook stood and crossed to the window, looking out over the dark barrack square.

"The entity takes an interest in certain people. It marks them, as it marked you. Your grandfather was one of them."

"What happened to him?"

Rook turned back towards me.

"He took his own life on 18 September 1964, thirteen months after the escort."

The news struck with physical force. Mum had always said her father died young, but never told me how. When I asked as a child, she changed the subject. Eventually, I learnt not to ask.

"Why wasn't I told about this connection before the mission?"

"Would you have believed me?" Rook asked, echoing his words from our previous meeting. "Would you have agreed to go?"

He was right. I would not have believed him.

"So what happens now?"

Rook returned to Callum's bed.

"You have a decision to make, Sergeant Mercer. Two options."

He raised one finger.

"The first is that you join a specialist unit dealing with these phenomena. It is a small group engaged in highly classified work. You would learn more about entities such as this walker and help manage their interactions with our world."

He raised a second finger.

"The second is that you accept a transfer to an ordinary posting well away from here. Before you leave, you undergo memory-suppression treatment. It does not erase everything, but it blunts the experience. In time, it feels like a dream or a story someone once told you. Most people involved in an escort choose that option. Callum Price chose it last week."

That explained Callum's abrupt transfer.

"And Nathan? Elliot?"

"Elliot Ward chose the first option. He is training with the specialist unit now."

"Nathan?"

Rook paused.

"Nathan Cole disappeared three days after your return. We're still looking for him."

The room seemed suddenly colder.

"Disappeared how?"

"He left the garrison without authorisation. His car was found near Leeds coach station, but there is no record of him buying a ticket. His bank accounts have not been touched."

Rook's voice remained flat and clinical.

"It happens sometimes to those who are marked. They attempt to run, but there is nowhere to go."

I thought about the burning in my shoulder, the yellow eyes that sometimes watched me from the shadows and the fine grey dust that appeared on my sheets.

Was that my future? Joining a secret military unit that dealt with monsters? Having my memories partly suppressed? Or vanishing like Nathan, fleeing something from which there was no escape?

"I need time to think," I said.

Rook nodded.

"You have forty-eight hours."

He rose and walked to the door, then stopped.

"One more thing, Sergeant. The mark on your shoulder will get worse before it gets better. If you begin seeing her not only in dreams or reflections, but standing before you as clearly as I am now, ring this number immediately."

He handed me a card bearing only a telephone number. There was no name and no department.

"Day or night," he added. "Whatever option you choose."

After Rook left, I sat on my bed for a long time, staring at the newspaper cutting and the photograph of Edith Harrow with yellow light in her eyes.

Eventually, I took out my mobile and called Mum. She answered on the third ring.

"Daniel? Is everything all right? You never ring this late."

"I'm fine, Mum. I just... I wanted to ask you something about Grandad Edward."

The line was silent for so long that I thought the call had dropped. At last, her voice returned, quieter and more guarded.

"What about him?"

"What do you remember? About him, and about how he died?"

Another long silence followed.

"Why are you asking this now?"

"It's important, Mum. Please."

She sighed, the sound softened by static.

"He was ill, Daniel. Mentally ill. The doctors called it paranoid delusion in those days."

"What sort of delusions?"

"He... He believed something inhuman was following him. He spoke about someone with yellow eyes who knew all his secrets."

Her voice cracked.

"We thought he was mad. Everyone did. He spent time in a military psychiatric hospital, then received NHS psychiatric care, but nothing helped. One day, he simply couldn't endure it any longer."

Yellow eyes that saw through him.

Just as Edith had known what I had done near Basra.

"Did he ever mention a house in Whitby?"

"How did you know about that?"

The question came sharply, full of surprise.

"He became obsessed with that house towards the end. He kept saying he had to go back. That something was waiting for him there."

She paused.

"Daniel, what's going on? How do you know these things?"

"It's complicated, Mum. I can't explain it now."

I wanted to tell her everything, but how could I make her understand when I barely understood it myself?

"You're frightening me," she said softly.

"I'm all right. Honestly. I only needed to know about Grandad Edward."

I tried to sound reassuring.

"I should go. It's late."

"Daniel-"

"I'll ring tomorrow, Mum. I promise."

I ended the call and lay back, staring at the ceiling. The fan revolved slowly overhead.

My shoulder hurt more now, as if something were pushing against the mark from inside my body. Outside, the garrison was quiet. Most of the soldiers were either asleep or away for the night.

I closed my eyes, expecting sleep to elude me, but exhaustion from the drive and everything I had learnt dragged me under almost at once.

I dreamt of my grandfather, whom I knew only from photographs. He stood before the red-brick villa in Whitby, far younger than in any picture I had seen, dressed in the battledress of 1963. A tall, paper-pale figure with an elongated face and yellow eyes stood in the doorway behind him. One long-fingered hand rested on his shoulder, exactly where mine hurt.

I woke violently and sat upright.

The room was dark except for the weak glow of the exit sign beyond the small window over the door. My watch showed that I had slept for just over three hours.

Something felt wrong.

I searched the empty room, half expecting yellow eyes to stare from a corner. Nothing moved in the darkness.

I lay down again and struck something hard beneath my pillow. Sitting up, I lifted it and found a small brass key.

It was like the one Edith had produced at the villa.

I picked it up carefully. It was old and worn smooth in places, with a trefoil-shaped bow bearing a pattern I could not make out in the dim light. I switched on the bedside lamp.

The markings resembled the symbols Rook had shown me in the images of the restored house: curved lines intersected by sharp angles, unlike any alphabet I recognised.

The key felt cool in my palm. Yet as I held it, I knew with absolute certainty that it would open the front door of 17 Hawthorn Lane.

I also knew, without understanding how, that it would be needed at the next cycle in 2083.

I slipped it into the pocket of the MTP trousers hanging over the chair beside my bed. I knew it would still be there in the morning. I knew it would remain with me regardless of where I tried to leave it.

The burning in my shoulder eased as soon as I released the key, as though the mark and the metal were connected - two parts of the same thing.

I lay down and switched off the lamp, but sleep would not return. I stared into the darkness, thinking of Grandad Edward, of Edith Harrow's yellow eyes and of the choice Rook had given me.

Two options, neither of them right.

Join a unit that managed monsters, or allow Defence to smother my memories and leave me unsure of what was real.

What if there were a third option?

Six months after the escort mission, I made my decision.

Two days spent staring at Rook's card became a week, then a month, then several months of indecision while I returned to ordinary duties. The burning in my shoulder never vanished entirely, but it faded enough for me to ignore it on most days. Yellow eyes appeared less often in mirrors and shadows, and I almost persuaded myself that what had happened in Whitby might eventually become no more than an extraordinary memory.

Almost.

I arranged to see Rook on a Tuesday morning in early spring. His office was exactly as I remembered it: plain and practical, with the same buff folders stacked neatly across his desk.

"I'm declining both options," I said after he had closed the door.

Rook did not look surprised. He sat back, folded his hands on the desk and watched me with the same calculating expression I had come to recognise.

"I want to leave completely," I continued. "An honourable discharge."

"You have nearly three years remaining on your return-of-service commitment, Sergeant Mercer," Rook said neutrally.

"I know."

"And you believe Defence will simply let you walk away after what you've experienced?"

I met his gaze.

"I think you will. Whatever this entity is, whatever this arrangement is, it began long before me and will continue long after me. You've managed it for centuries without my help."

Rook was silent for a moment. Then he opened a drawer, removed a single sheet of paper and pushed it across the desk.

"Your discharge documents. Already authorised under confidential Defence arrangements. You need only sign."

I stared at the paper, unable to conceal my surprise.

"You knew I'd choose this."

"I suspected you might. Your grandfather tried to make the same choice."

Rook's expression softened a fraction.

"He was not permitted to leave. Things were different then. The programme was less humane in its methods."

I picked up the pen he offered and signed.

"Is that why he killed himself?"

"In part, perhaps."

Rook took back the signed document.

"Your official discharge date is two weeks from today. That should allow you time to make arrangements."

I started to rise, but he lifted a hand.

"Daniel," he said, using my first name for the first time, "this does not end when you walk away. The mark she left is still there. It will always be there. You should understand that the marked escorts rarely live ordinary lives afterwards."

So his earlier claim that it would fade had been no reassurance at all. It had merely been another truth deliberately withheld until he thought I could endure it.

"I'll take my chances."

"Of course you will."

Rook opened another drawer and removed a sealed buff envelope.

"I'll give you this on your final day. Do not open it unless you begin seeing her again - not in dreams or reflections, but standing before you as clearly as I am now."

"What's inside?"

"Insurance," Rook said. "Now go and put your affairs in order, Sergeant. Your Army career is nearly over."

The two weeks passed quickly. I sold or donated most of my belongings and kept only what would fit inside my pick-up. I rang Mum to tell her I was leaving the Army, evading her questions about the sudden decision.

I said nothing about the mark, the dreams or what I had learnt about Grandad Edward.

On my last day, I signed the remaining paperwork, handed in my kit and walked through Catterick Garrison for the final time in civilian clothes. Rook was waiting beside my pick-up in the car park.

He handed me the sealed envelope.

"Do not open this unless you have no other choice," he repeated, his voice grave. "And Daniel, if the time comes, don't wait too long."

I placed it in the glove compartment without answering. Rook regarded me for a moment, nodded once and walked away.

I never saw him again.

Three days later, I reached Uncle Peter's isolated stone cottage near Kielder Water in Northumberland. He had died two years earlier and left the place to Mum. She did not want a cottage so far from the nearest village and was content for me to stay there until the property market improved.

The cottage stood among trees with a patch of open ground around it and distant views across the hills. A rough forestry track connected it to the road and was passable except after heavy snow. There were no close neighbours.

It was quiet, and it was exactly what I needed.

I spent the first week cleaning, making repairs and examining the property. The work kept me occupied: fixing pipes, replacing rotten boards by the door and cutting back the encroaching brambles. Each night I was tired enough to fall asleep immediately, without dreaming of yellow eyes or the house in Whitby.

My shoulder barely burnt at all.

The small brass key with its trefoil bow and strange markings remained in my pocket, inert and silent. I began to think Rook had been wrong. Perhaps I could simply forget what had happened.

For three weeks, everything was normal.

I settled into a routine: tea outside in the morning while deer moved between the trees, chopping wood or walking beside the water in the afternoon, and reading Uncle Peter's books by lamplight at night after switching off the generator.

Then the dreams returned.

The first was simple.

I stood in a field of tall grass moving beneath the wind. Far away, a woman in a faded green dress watched me. I knew it was Edith even though I could not see her face clearly. She raised one hand in greeting, and I woke.

The following night's dream lasted longer. It was the same field and the same woman, but this time she walked slowly towards me. Her features sharpened with each step. Her eyes were yellow.

When she came close enough to touch me, she smiled.

"It won't be long now," she said.

I woke drenched in sweat.

Every night after that, the dreams became more detailed. Edith walked beside me along a forestry track. Edith sat at the kitchen table in the cottage. Edith stood at the foot of my bed, bending over me and whispering words I could not quite hear but somehow understood.

Promises. Threats. Secrets.

Then I began finding the dust.

Grey powder lay on my sheets when I woke, identical to the residue that had fallen from the strange stone in the accommodation block. At first there were only a few grains, easy to dismiss as soil carried in from outdoors. But the quantity increased each day until, one morning, I woke to find the entire bed covered.

It looked as though something had crumbled to dust while I slept.

I stripped the bed, showered and tried to persuade myself there was an ordinary explanation. Then I looked into the bathroom mirror while shaving and stopped with the razor halfway to my face.

My brown eyes had turned yellow in the electric light. They shone like a cat's eyes, like Edith's eyes.

Like the eyes of the thing beneath her human shape.

I stepped back and blinked hard. When I looked again, they were ordinary brown, revealing nothing but my fear.

But I knew what I had seen.

That night, I could not sleep. I sat outside with a torch, a bottle of whisky and Rook's sealed envelope on the table beside me.

At about 03:00, I finally opened it.

Inside was a single sheet of paper bearing coordinates in neat handwriting. They indicated a location deep in the Cambrian Mountains of mid-Wales, beyond any marked road.

Beneath them was a brief note in the same hand.

IF SHE FINDS YOU, GO HERE. OTHERS LIKE YOU WILL BE WAITING.

The next morning, I packed the pick-up.

I did not know what waited at those coordinates, but I knew I could not remain at the cottage. The dreams were worsening, the dust appeared in ever greater quantities, and twice more I had glimpsed yellow eyes looking back at me from mirrors.

I drove south-west from Kielder Water, through Cumbria and Shropshire and towards rural Wales. I stopped only for diesel, food and a few hours of restless sleep at roadside inns and motorway service areas.

The burning in my shoulder returned, stronger than before, reminding me of Edith's touch and the link she had created between us.

After passing a "Welcome to Wales" sign, I turned towards the uplands. The roads narrowed between steep green slopes. Slate ridges rose beyond dark reservoirs, and blocks of forestry gave way to stretches of open moor. Eventually I pulled into an A-road lay-by to stretch my legs and clear my head.

The view reached across miles of empty hills beneath a hard blue sky. I leant against the barrier, trying to understand what was happening to me.

The entity had not been captured or controlled by the Army's arrangements. It had merely used them - used us - as it had used generations before. Every sixty years it allowed itself to be carried from northern Scotland back to the house in Whitby for reasons I still did not comprehend. Along the way, it looked into certain people, exposed their darkest secrets and marked them.

My grandfather had been one of them.

Now I was too.

Was that why he had taken his life thirteen months after the August 1963 escort? Was the same fate waiting for me?

I thought of the others Rook had named. Elliot, who had joined the specialist unit. Callum, who had chosen to forget. Nathan, who had vanished.

And now there were others like me waiting somewhere in the Cambrian Mountains. Perhaps some had been marked during other encounters, if not earlier cycles. How many were there? How long had they survived carrying the mark?

What did they know that might help me understand what Edith had done to me?

This was not a fight I could win with weapons or careful plans. Whatever lay beyond the unmarked forestry road was my only hope of understanding, and perhaps surviving, what the walker had made of me.

I returned to the pick-up and continued into the mountains.

The landscape grew wilder. Slate ridges rose over black water, forestry tracks vanished between ranks of conifers and open moorland stretched away beneath banks of cloud. The burning in my shoulder throbbed with every beat of my heart.

As I turned off the main road and followed the satnav towards the unmarked track, movement in the rear-view mirror caught my eye.

I looked up and froze.

Edith sat behind me, wearing the same faded green wool dress she had worn in Caithness. She smiled, her eyes shining yellow in the mirror.

I twisted round to look at the rear seats.

They were empty.

There was no Edith and no sign that anyone had ever been there.

When I faced the road again, I had to wrench the steering wheel aside to avoid drifting into the opposite lane.

I stopped at the next lay-by, my hands shaking against the wheel. This was exactly what Rook had warned me about: seeing her not only in dreams or reflections, but as though she were physically present.

I reached into my pocket and closed my hand around the brass key that had appeared beneath my pillow months before.

It felt hot against my skin, the opposite of the burning in my shoulder. Whatever connection existed between me and the thing was growing stronger. The coordinates Colonel Malcolm Rook had given me, somewhere beyond an unmarked forestry road in the Cambrian Mountains, were still several hours away. I had to reach them before these sightings, or whatever they were, became more than I could handle.

I started the pick-up again and pulled back onto the road, watching the Welsh uplands pass beneath a darkening sky. Slate ridges, reservoirs and open moor stretched beyond the verge as I drove deeper into the mountains, trying not to look in the rear-view mirror too often.

The brass key in my pocket, with its worn trefoil-shaped bow, cooled as the miles passed, but it remained there, reminding me that my journey with Edith was far from over.

When I finally looked into the mirror, she was sitting behind me.

Her faded green wool dress lay neatly across her knees. Her vertical yellow pupils caught the last of the light, and she smiled with far too many needle-like teeth.