Run: 2026-07-25-01KYCPXJ4WR9AXK9N99Y6NKRR3

The stairwell down to the disused platform smelled of wet chalk and copper. Quinn took the steps two at a time, torch beam swinging across tiles the colour of old teeth, and counted forty-one before the tunnel opened out. "Mind the third from the bottom," someone called up. "It's loose." She stepped over it anyway. The platform ran ninety metres into darkness, and someone had strung four work lamps along it on orange cable. Between them, the light pooled and failed. Uniforms moved in and out of the pools like fish surfacing. A generator coughed somewhere behind the tiled wall. DS Aiyana Bell met her at the bottom with two cups of station coffee and handed one over without being asked. "You're going to hate this," Bell said. "I already hate the stairs." "That's a start." The body lay in the middle of the platform, well clear of the edge. Male, fifty-odd, grey overcoat, one shoe missing. Face turned away toward the tracks. Around him — and this was the thing Quinn's eyes went to before anything else — the dust had been swept into a circle. Not scuffed. Swept, deliberately, into a raised rim about two metres across, clean stone inside it, the way a child clears a patch of sand at the beach. Quinn stopped outside the rim and crouched. "Who's been in?" "Photographer. Me. Pathologist for four minutes, and she stepped where I told her to step." Bell pointed with her chin at two sets of overshoe prints, both entering and leaving by the same narrow corridor. "Nobody's touched the circle otherwise." "Good." Quinn set her coffee down on the tile and didn't pick it up again. "Name?" "Wallet says Gerald Prentice. Sixty-one. Address in Kentish Town, ten minutes' walk if you know the alleys. Retired — some kind of surveyor, we're chasing it. Wife reported him missing at six this morning, which is the only reason anybody came looking down here at all." "Why here?" "That's the good part." Bell flipped her notebook back a page. "Missing persons had a call from a woman who says she saw him go through the hoarding on Kentish Town Road at half eleven last night. Said he was 'walking like he had an appointment.' Her words." Quinn moved along the rim, keeping her boots off the swept stone, and lowered herself onto her heels again where she could see the man's face. Mouth slightly open. Eyes open too. No fear in them that she could read, though she distrusted herself on that; the dead arranged their faces to suit whoever was looking. "Cause?" "Pathologist won't commit. No wound she can find. No ligature. No froth, no vomit. She said heart, provisionally, and she said it like she was apologising." "Temperature?" "Cold down here. She's not giving me a window narrower than eight hours." Quinn's torch travelled from the man's collar down his sleeve to his right hand. It lay palm-up, fingers curled, and the pads of the index and middle finger were grey with dust. She swung the beam back to the rim of the circle. Under the clean sweep, at the near edge, there were marks. Two shallow furrows, parallel, the width of two fingers. "He swept it himself." Bell came round to look. "You're sure?" "His hand's dirty and there's no brush. There's no broom, no rag, no bit of cardboard anywhere on this platform, is there?" "No." "Then he did it on his knees with his hand." Quinn tilted her head. "Check his trousers at the knee. Don't touch, just look." Bell knelt outside the line and put her torch low. The grey wool at both knees was matted with dust, darker than the rest, worn to a shine at the crest. "All right," Bell said. "So he's mad. He comes down here at half eleven at night, sweeps himself a magic circle, and drops dead in the middle of it. Sad, and stupid, and not a crime." "Where's his other shoe?" "Kicked off in a fit? People do odd things when their heart's going." "Where is it, though." Bell looked around, and Quinn watched her look, and watched her not find it, because Quinn had already swept the platform once with her eyes on the way down the stairs and there was no shoe. "It'll be on the tracks," Bell said. "Then it fell off before he lay down, and he walked the last stretch in one sock, and there'd be a sock print." Quinn stood, knees complaining, and put the beam flat along the floor outside the circle. Grit and old dust and the tidemarks of eighty years of nothing. Prentice's shoeprints came in from the stairwell end — she followed them backwards with the light, twenty feet, thirty — and then, four metres short of the circle, they stopped. Not faded. Stopped. As though he'd walked to that spot and been lifted. "Bell." "I saw it. There's a gap. It's a draught pattern, the dust doesn't lie even, you get that in these tunnels—" "Come and stand here." Bell came and stood, and Quinn moved the torch, and neither of them said anything for a while. The generator coughed again. "Four metres of nothing," Quinn said. "And then his knee prints. And then him." "Draught." "Then explain why my prints are perfectly clear across the same four metres." She stepped back and let the light fall on her own tread pattern, crisp as a stamp, crossing exactly the ground where Prentice's had vanished. Bell tucked her notebook under her arm. "You're going to say somebody carried him." "I'd love to say that. Two men carrying a twelve-stone bloke leave more mess than one man walking, not less. And they'd have to have got in past the hoarding, past the shutter, and down forty-one stairs, one of which is loose enough to bang like a drum. And they'd have to have left." Quinn turned in a slow circle, taking in the tiled arch, the sealed tunnel mouths, the platform edge. "There's one way in." "There's the tracks." "Flooded at both ends. Uniform waded fifteen metres north and gave up." Quinn crouched again by the rim. "I want the sweep photographed under raking light before anyone breathes on it. And I want the pathologist back down here before she moves him." "For what?" "His fingertips." Quinn hovered her hand over the dead man's, close enough to feel the difference in the air. "Look at the nails. He's dug them in. Not deep, but he's dug them in. That's not a heart attack, that's holding on." Bell crouched too. Under the beam, the quicks of Prentice's fingers were packed dark and one nail had split down the middle. "Holding on to a stone floor," she said. "Holding on to something." Quinn stood, and her torch, swinging, caught something at the far edge of the swept circle that the work lamps had washed out entirely. She went round on her toes, careful, and put the beam on it at a low angle. Scratched into the clean stone, no bigger than a beer mat, was a mark. Three lines meeting, and a fourth cutting across, and around the whole thing a shallow ring, incised, not swept. The stone dust from the cutting lay beside the grooves in tiny pale drifts. Fresh. Quinn had seen that mark before, in a photograph, in a file that had been closed on her three years ago. DS Morris's file. She had a copy in her flat that she was not supposed to have. "Guv?" "Nothing." Quinn's voice came out level, which cost her something. She straightened. "Get me the sweep photographed. And get me the missing shoe." "And the mark?" "Nobody photographs the mark but me."