1. The Vanishing Clause

The flight into Vostovia took four hours and cost Kate Cartwright everything she had left in her savings account. The cabin smelled of stale cigarettes and boiled cabbage long before the wheels touched down, as if the country itself had begun to seep through the fuselage. She pressed her forehead against the cold oval window and watched the landscape rise to meet them: flat grey marshes stitched together by black water, the occasional cluster of concrete tower blocks, a single road running straight as a scar toward the capital.

Krakovgorod Airport had two baggage carousels and only one of them worked. Kate stood with the other passengers in exhausted silence, watching the same three suitcases circle endlessly while a uniformed woman smoked behind the information desk. Nobody seemed to care. Nobody seemed to expect anything different. That was the first thing she learned about Vostovia: the place ran on a fuel distilled from apathy and quiet desperation, and it had been burning that fuel for decades.

Her brother Leo had been here for six days before he vanished. Twenty-four years old, fresh out of university, a head full of cheap guidebooks and romantic notions about Eastern European authenticity. He had sent her a photograph from the main square on his second day: grinning, holding a paper cup of mulled wine, the onion domes of St. Vasiliya’s Cathedral blurred in the background. Two days after that, a one-line message: Insurance sorted. NorthStar gold package. Mum would be proud. And then nothing.

The police station on Ulitsa Gromyko occupied the ground floor of a building that had probably been condemned twenty years ago. The walls were painted mustard yellow up to shoulder height, then white above, though the white had long since yellowed too. A desk sergeant with a face like a closed fist barely looked up when Kate approached.

“My brother is missing,” she said, placing a printed photograph on the counter. “Leo Cartwright. British national. He was staying at the Hotel Morozko.”

The sergeant prodded the photograph with one thick finger. “He is tourist. Tourists get drunk. Tourists meet girls. He will come back.”

“He hasn’t been seen in four days. His passport is still at the hotel. His belongings. Everything.”

“Maybe he go hiking.” The sergeant’s mouth twitched into something that wasn’t quite a smile. “Beautiful nature here. Very dangerous for unprepared.”

Kate felt the first hot prickle of anger at the base of her skull. She forced it down. “I need to file a missing persons report. I need you to do your job.”

“We have job. Too many jobs.” The sergeant pushed the photograph back across the counter. “Go to your embassy. Let them do paperwork. Is nothing to do with Krakovgorod militia.”

“This is a militia?” A new voice cut in from the station entrance, dry and rough-edged, like a saw dragging through old timber. “Looks more like a social club for failed traffic wardens.”

The man who had spoken was leaning against the doorframe, his coat too thin for the weather, his tie knotted crookedly. He was somewhere in his late forties, with thinning hair and the particular pallor of a man who spent too many hours in poorly lit rooms. A camera hung from a strap around his neck, its lens cap missing.

The sergeant’s expression curdled. “Volkov. You are not welcome here.”

“I’m hurt, Sergeyich. Truly.” The man called Volkov straightened up and gave Kate a long, appraising look. “You’re the sister. The missing Briton.”

Kate stiffened. “How do you know that?”

“Because I’ve been asking the same questions you have, and I’ve been asking them for three days.” He stepped forward, ignoring the sergeant’s glare, and extended a hand. “Aleksei Volkov. I used to be a journalist. Now I’m just a nuisance with a press card that expired in 2019.”

She didn’t take his hand. “What do you want?”

“To buy you a drink. And to show you something that will make you very angry.” Volkov glanced at the desk sergeant, who was now reaching for a telephone. “But not here. Not where the walls have ears and the ears have wages paid by people who don’t like questions.”

Kate hesitated. Everything about Volkov screamed unreliability: the frayed cuffs, the faint smell of vodka masked by cheap cologne, the nervous way his eyes kept flicking toward the door. But he had known who she was without being told, and right now he was the only person in Vostovia who had offered her anything besides indifference.

“Fine,” she said. “But if this is a setup, if you’re working with whoever took my brother—”

“Miss Cartwright.” Volkov’s voice dropped, and for a moment the sardonic mask slipped, revealing something raw and exhausted underneath. “I wish I were working with them. It would pay better.”

The bar was called the Rusty Nail, and it lived up to its name. They sat in a corner booth beneath a television that played muted football highlights, the screen so old that the players left green trails whenever they moved. Volkov ordered two glasses of something he called gorilka and pushed one across the sticky table toward Kate.

“Your brother bought insurance from NorthStar Mutual,” he said without preamble. “Correct?”

“Yes. The gold travel package. I found the policy documents in his email.”

“And you contacted them?”

“Eight times. They kept transferring me to different departments. Finally someone in claims told me Mr. Cartwright’s file was under review and they couldn’t comment further.” Kate’s hand tightened around her glass. “That was yesterday. This morning I got an email saying they had no record of any active policy in his name.”

Volkov nodded slowly, as if this confirmed something he already suspected. “NorthStar Mutual Assurance. Biggest employer in Vostovia after the government. They insure everything: travel, property, life, funeral costs. Very respectable. Very profitable. Very, very good at not paying out.”

“You think this is about insurance fraud?”

“I think this is about something much worse.” Volkov reached into his coat and produced a small memory card, the kind used in older digital cameras. He placed it on the table between them, his fingers still resting on its edge. “Six months ago, a German hiker went missing in the Gribov Marshes. He had a NorthStar policy. Four months before that, a French couple. Same story. Before them, a Turkish businessman. All tourists, all insured by NorthStar, all vanished without a trace.”

Kate’s pulse had begun to beat in her temples. “Why hasn’t anyone investigated?”

“Because the militia is bought. The courts are bought. The newspapers are bought.” Volkov tapped the memory card. “I wasn’t bought. Which is why I no longer work for a newspaper, and why I drink in places where the lighting is bad and the exits are plentiful.”

“What’s on the card?”

“The reason your brother isn’t coming back from his hike.” Volkov slid the card across the table. “I was following a lead two nights ago. NorthStar has a claims processing centre on the industrial estate, out past the old tractor factory. I was taking photographs of the building when a van pulled up. NorthStar logo on the side. Two men got out, opened the rear doors, and dragged someone inside.” He paused, and when he spoke again his voice was barely above a whisper. “I got footage. The man they dragged—dark hair, early twenties, wearing a blue jacket. I compared it to the photograph you put on the missing persons forum. It’s your brother, Miss Cartwright. I’m sorry.”

The world tilted. Kate heard herself breathing, short shallow gasps that seemed to belong to someone else. She grabbed the memory card and closed her fist around it so tightly that the plastic edges bit into her palm.

“Why should I trust you?” she managed. “You could have fabricated this. You could be working with them right now, trying to extort me.”

“I could be.” Volkov shrugged. “But I’m not asking you for money. I’m asking you to help me prove what NorthStar is doing before they realise I have this footage and send someone to collect it.”

Before Kate could respond, the door of the Rusty Nail slammed open. Two men in dark overcoats stood silhouetted against the grey afternoon light. Volkov’s face went slack with something that looked very much like fear.

“Militia liaison,” he muttered. “They work for NorthStar’s security division. Whatever happens, don’t let them take the card.”

The men scanned the room, their gaze settling on the corner booth. One of them—thick-necked, with a scar bisecting his left eyebrow—began walking toward them with the deliberate pace of someone who had never needed to hurry.

“Mr. Volkov,” the man said, stopping beside the table. “We need to have a conversation about the camera you were carrying on the night of the eighteenth.”

Volkov’s hand moved under the table, pressing something cold into Kate’s palm alongside the memory card: a set of keys, attached to a worn leather fob stamped with an address in Cyrillic.

“Run,” he whispered. “Out the back. Now.”

Kate didn’t think. She moved. The two men shouted as she bolted for the rear exit, crashing through a door into an alley that smelled of rotting cabbage and diesel. Behind her, she heard the sound of a table overturning, a sharp cry from Volkov, and then nothing but her own footsteps hammering against wet cobblestones.

She ran until her lungs burned and her vision blurred with tears she refused to shed. When she finally stopped, doubled over in a doorway, she looked down at the keys in her hand. The address on the fob read: Ulitsa Kholodnaya 14, Apartment 7.

That was when she noticed the second item Volkov had pressed into her palm. It was a matchbook, cheap and flimsy, from a nightclub called Inferno. Inside, scrawled in pencil, were two words: Proof burns.

She turned the matchbook over. On the back, in the same handwriting, was a time and a location: 22:00, Ostrov Bridge, north pillar.

Kate checked her watch. She had seven hours.

Somewhere in the city, a siren began to wail. She pressed her back against the cold stone of the doorway and clutched the memory card against her chest, feeling the rapid flutter of her own heartbeat beneath it. Leo was alive—or he had been, two nights ago, when he was dragged out of a van and into the belly of a company that had already erased his name from its records.

She thought about the forged suicide note Volkov had mentioned outside the police station. She hadn’t seen it yet, but she understood its purpose: a tidy bow on a messy situation, an explanation that would satisfy the embassy and the local authorities and anyone else who might ask uncomfortable questions. Tragic young man, overwhelmed by life, throws himself into the marshes. Case closed. Policy voided.

But the footage on the card told a different story, and Kate intended to tell it to anyone who would listen.

She pushed herself upright and began walking toward Ulitsa Kholodnaya. The streets of Krakovgorod had grown darker while she was in the bar, the winter sun bleeding out behind the tower blocks like a wound that refused to clot. Somewhere ahead, a church bell tolled the hour, its notes heavy and dissonant in the freezing air.

By the time she reached the apartment building, her fingers were numb. The entrance hall was unlit, the lift permanently out of service, the stairs slick with something she didn’t want to identify. Apartment 7 was on the fourth floor, its door reinforced with a steel plate and three separate locks.

She let herself in and locked the door behind her.

The apartment was small but functional: a single room with a kitchenette, a narrow bed, a desk piled with notebooks and loose papers. The walls were covered with pinned photographs and news clippings, dozens of them, connected by lines of red string. Kate recognised faces from the missing persons reports Volkov had mentioned: the German hiker, the French couple, the Turkish businessman. All of them smiling in their photographs, oblivious to the fate that awaited them in Vostovia.

In the centre of the wall, pinned slightly apart from the others, was a photograph of Leo. Her brother. Her stupid, adventurous, trusting little brother, grinning beneath the onion domes of St. Vasiliya’s.

Kate sat down heavily on the edge of the bed. She found Volkov’s old laptop on the desk, a battered machine held together with electrical tape, and inserted the memory card into the slot.

The video file was three minutes and forty-seven seconds long. Grainy, poorly lit, shot from a distance with an unsteady hand. But it was clear enough.

She watched a white van with the NorthStar logo pull up to a loading bay. She watched the rear doors open. She watched two men drag a struggling figure into the building, his blue jacket unmistakable, his dark hair catching the light of a security lamp. She heard a muffled shout, cut short by a door slamming shut. And then nothing but the hum of the camera and Volkov’s ragged breathing on the audio track.

Kate watched the video three times. By the end of the third viewing, her tears had dried and something harder had taken root inside her chest, something that felt less like grief and more like ignition.

She was still staring at the frozen screen when the laptop chimed with an incoming message. The sender was listed only as a string of numbers. The subject line read: Your brother’s claim has been processed.

She opened the message. It contained a single attachment: a scanned document, written in Russian, bearing the letterhead of the Krakovgorod Militia. She translated it painstakingly using an online tool, her stomach tightening with each decoded line.

It was a coroner’s report.

Leo Cartwright, the document stated, had been found floating in the Gribov Marshes that morning. Preliminary findings indicated death by drowning. A handwritten note had been discovered in his hotel room, expressing intentions of self-harm. The militia considered the matter closed.

Kate stared at the screen for a long time. The report was dated today, at an hour when she had been sitting in the Rusty Nail, hearing Volkov describe how he had watched her brother dragged into the NorthStar building two nights earlier. Either Leo had somehow escaped, walked to the marshes, and drowned himself in the intervening hours—or someone had written this report before his body had even been found.

Or before it had been planted.

Her phone buzzed. A text message from an unknown number: They took Volkov. Apartment not safe. Burn everything. 22:00, Ostrov Bridge. Trust no one.

Kate looked at the matchbook again. Proof burns.

She understood now. The memory card was evidence, but it was also a fuse. If she lit it, if she showed it to the world, she might bring NorthStar crashing down—but she would also be setting fire to everything Volkov had built, everything he had sacrificed, and quite possibly herself along with it.

She sat in the darkness of the apartment, surrounded by photographs of dead tourists, and waited for the hour to arrive.

Outside, the church bells began to toll again, counting down toward a meeting on a bridge in the coldest city Kate had ever known. In her pocket, the memory card felt heavier than it should have, as if it were already carrying the weight of everything that was about to happen.

And somewhere in the marshes, the water was still rising.