Run: 2026-09-29-01M3P2H035SE2AVX4NJWTPCGTN

The stairwell smelled of wet brick and old pennies. Quinn counted the steps on the way down, as she always did. One hundred and six. Somewhere past ninety the mobile signal died, and the torchlight from the uniforms below turned the tiled walls the yellow of old teeth. A constable held the tape up for her. Beyond it, the platform opened out under a vaulted ceiling, its curved tiles still stamped with the ghost of a station name that decades of soot had eaten down to three letters. "Guv." DS Okafor stood at the platform edge with his coat buttoned to the throat and a takeaway coffee he must have carried down from street level. He raised it in greeting. "Sorry about the hour. I'd have called someone else, but the Super wants this one tidy by breakfast." "Tidy." Quinn ran her torch along the floor. "Tell me about tidy." "Male, fifties, no ID. Dropped off the platform edge onto the track bed. Neck's broken, so the fall did it. Half a bottle of something brown in his coat and the smell to match. A rough sleeper who wandered past the hoarding and lost his footing." He shrugged. "Sad, but simple." "Who found him?" "Network Rail contractor doing a survey. He's upstairs with a blanket and a flask." Quinn walked to the edge and looked down. The man lay on his back between the rails, one arm flung wide, his face turned toward the tunnel mouth as though someone had called his name from the dark. His coat was a good one. Wool, and a decent cut. She crouched, and the leather strap of her watch creaked against her wrist. "When did you last see a rough sleeper in a coat like that?" "Charity shops get generous." "They do." She tilted the torch. "Where's the blood?" Okafor frowned and peered over. "Head wounds bleed, sure, but a broken neck can be clean. Internal." "His nose is intact. His lip isn't split. Nothing on the ballast under him." She swept the beam wider. "He fell six feet onto iron and gravel and didn't mark either." "Guv, people fall strangely." "They do. They also scrape their palms." She pointed. "Look at his hands." Okafor squinted. "Clean." "Clean as a surgeon's. No grit in the creases, no dirt under the nails. A man who sleeps rough in a Camden tunnel." She stood, and her knees popped. "Come up here. Walk with me." She led him along the platform, keeping to the wall. The dust lay thick across the concrete, grey and fine as flour, and it held the marks of the night like a photographic plate. Boot prints from the first responders. The paramedic's kneeling scuffs. The contractor's trainers, which had a distinctive chevron sole. "Here." She stopped. "What do you see?" "Dust." "Look where it stops." Okafor stared. Then he crouched beside her, and his coffee sloshed on the lid. "It's… squared off." "In a line. And there, a second line, running parallel four metres on." She traced a rectangle in the air with her torch. "Something sat here. Something with a flat base, wide as a market stall. The dust under it is undisturbed. Everywhere around it, someone has walked through it a thousand times." "A survey team's kit, maybe. Trestle tables." "The contractor's report says he was alone. And that he came in through the east hoarding at half past four." She moved the beam down the platform. Six more rectangles, then eight, then a dozen, laid out in ragged rows. "That's not a survey. That's a fair." Okafor stood and turned a full circle. Some of the certainty had gone out of his shoulders. "Squatters, then. A rave. Somebody trading dodgy gear down here, and our man wandered into the wrong crowd." "Then where's the litter?" He opened his mouth and shut it again. "Ravers leave cans, glow sticks, foil. Dealers leave wraps and burnt spoons. This place has been swept, Okafor. Somebody took a stiff broom to the whole platform after the crowd left." She pointed at the far end, where the dust lay in faint, curved arcs. "You can see the bristle marks." "So they cleaned up. And missed a body?" "No. They didn't miss him." She walked back to the edge and looked down at the dead man's face. "They left him." "Why would anyone sweep a platform and leave a corpse?" "That's the question that keeps me interested." She dropped into a crouch again, angled her torch at his coat, and nodded to the paramedic hovering near the tape. "Can we turn him? Just the shoulder." The paramedic climbed down with a grunt and eased the body onto its side. Something slid from the man's sleeve and rang against the rail. Quinn reached for it with a gloved hand. A compass. Small, brass, the casing crusted green along its seams. She turned it in the torchlight. Symbols crawled around the face, fine as etched hair, and none of them belonged to any alphabet she knew. "Souvenir," Okafor offered. "Antique shop find." "Watch the needle." It didn't point north. It didn't settle at all. It shivered against its pin and swung, slow and stubborn, until it locked on the wall behind them, at the blank tiled stretch where a doorway might once have led to the lifts. Quinn took two steps left. The needle followed. Two steps right, and it followed again, quivering like a dog on a scent. "Magnetic interference," Okafor said. "Rails. Cables." "Then it would spin. It's aimed." She held the compass flat on her palm and walked toward the wall. The closer she got, the harder the needle strained, until the brass grew warm through her glove. She stopped an arm's length from the tiles and studied them. The grout was clean. Everywhere else on this platform, grime had settled into every seam, but along a rectangle the height of a man, the joins were bright. "Someone's been through here," she said. "Often." Okafor joined her. He laid his palm against the tile, then jerked it back. "Cold." "Colder than the rest?" "Much." He wiped his hand on his coat. "Guv, it's a wall." "It's a wall that has a better cleaning regime than my flat." She turned back to the body and its clean hands, its unbroken skin, its face pointed at the tunnel. "Your rough sleeper didn't fall. Nobody falls without a mark on them. He was carried down here, laid out on those rails after the stalls were packed away, and left with a compass in his sleeve." "Carried by who?" "By people who wanted him found." She closed her fist around the brass. "Or people who wanted us looking at the track bed and not at the wall." Okafor said nothing for a moment. Water ticked somewhere in the dark. Then he set his coffee on the platform edge, took out his notebook, and began to write. "Photograph the dust," Quinn told the constable. "Every rectangle. Then the wall, and the grout. Nobody touches that tile until I say."