AI The wan, yellow tube platform lights flickered unevenly over broken tiles and forgotten signage. Detective Harlow Quinn ducked beneath a cobwebbed sign that read “Camden Town – Northbound,” now half-submerged in shadow and dripping water. Her footsteps echo ed along the abandoned platform, and something metallic twisted beneath her boot—a bottle cap, flattened and rusted, nothing more sinister than the world above would expect. But the air down here felt staler than mere neglect and cold in a way that clung to her wrists and the back of her neck.
Beyond the discarded wrappers and graffiti, a pair of uniforms stood by the mouth of a service tunnel, shifting their weight from foot to foot. A third silhouette waited just beyond the wan light: DS Patel , notebook in hand, brows ruched, the edge of his mouth unsettled .
“Detective Quinn,” Patel called, his tone both greeting and warning. “You got here quick.”
“I was told it couldn't wait.” Quinn's movements were measured, spare—military precision in every stride, each gesture pared down to intent. She stopped an arm’s length from Patel and scanned the platform. It was empty except for the officers, the sullen shape of a forensics tent, and a figure slumped beside a row of cracked tiles. Blood arced in a spatterspray from the wall behind the body, stippling soot and something crusted and yellow.
The forensics tech, bent over the corpse, looked up. “We’ve just started, ma’am,” she murmured.
Quinn’s gaze sharpened. The victim—a man, early thirties, dressed expensively but not recently—was splayed on his stomach, coat askew, one arm twisted underneath his body. His face was slack in the false peace of the freshly dead.
Patel cleared his throat. “ID in the wallet matches one Sebastian Kore. Banker. No outstanding warrants. According to Transport Authority, there’s been no official train through this service line in over a decade.” His voice lowered. “So, what the bloody hell was he doing down here?”
Quinn’s boots scraped as she knelt. Out of habit, she checked her battered watch—nine minutes past nine—and then snapped on a glove. “That’s what we’re going to find out,” she said. The man’s left wrist bore a pattern of faint bruises, round and parallel, inconsistent with the violence that had painted the tiles: not defensive wounds, perhaps restraint. Quinn leaned in, examining calluses at the knuckles, neatly manicured nails, a thin dusting of white powder at the edge of the nostrils. Not coke—luminous , faintly iridescent, clinging to skin.
She scraped a sample into a bag, scribbled a note, and glanced up.
Patel crouched beside her. “I’m taking this for a hasty robbery gone bad,” he said, as if reciting for the tape. “Some junkie, maybe two, saw a mark with a fancy watch and wallet, dragged him down here for privacy, got more violent than planned.”
Quinn shook her head. “Doesn’t fit. Bruises like these—restraint, not a scuffle. Blood pattern’s wrong, too. See how it’s higher up the wall?” She traced the arc with her gaze. “He was standing—or kneeling—against it.”
Patel hesitated. “Execution?”
“Maybe, but look at his shoes.” She gestured. Expensive Italian leather, soles blistered with some sticky residue, as if he’d walked through oil and dust. “There’s a track leading from the tunnel—that service corridor.” She pointed. “He isn’t the first down here tonight.”
Patel straightened up, shoulders squaring as if to armor himself against her insistence. “Security caught nothing; these tunnels are sealed at the street.”
Quinn inhaled. Something rancid and metallic threaded the air beneath the sickly light. She pivoted her focus, studying the wall above the blood. Amid the graffiti and paint-rubbed adverts, a sigil had been etched , half hidden behind a torn map of the Underground. Recent—lines still faintly raw, chalky-white. Shapes she’d seen once before, years ago, in the folder DS Morris had thrust at her just weeks before he’d vanished.
She ran a gloved finger above it, feeling the bone-deep chill. “See this?” Quinn said harshly, drawing Patel ’s attention. “Get a close-up. I want analysis before the uniforms start cleaning.”
He shrugged, “Just looks like the usual occult shite. Kids with too much time.”
The forensics tech, overhearing, cleared her throat. “There’s more. In the tunnel.”
Quinn’s pulse kicked up. She rose, waving Patel after her, and ducked through the archway past the crime scene tape. The service tunnel felt colder still, as if the dark pressed against her skin. A set of shallow footprints marked the dust—one set, then two, intersecting. She crouched again, running a hand along the wall.
Further along, tucked behind a jumble of abandoned signal boxes, the forensics tech knelt over a small scattering of objects: a polished brass compass, caked with verdigris and etched in runes that did not belong to any mundane mapmaker; a bone token carved into the shape of a crow’s foot; and a wallet, half-open.
Quinn snatched the compass, feeling its unnatural weight , its face prickling beneath the glove. The needle spun, pausing not at north but at nothing visible, then jittering, as if it hungered for something just out of reach.
Patel peered at it over her shoulder. “That thing yours?”
“It isn’t police issue.” Quinn’s mouth compressed to a line. Protective sigils circled the compass face, most in languages she barely recognized—old faiths, older fears. “Log them,” she barked to the CSU.
She lingered over the bone token, then slipped it into an evidence bag. Patel watched her, skeptical. “What are you thinking, Harlow?” He knew better than to call her ma’am when she moved like this, on a trail only she seemed to see.
She squinted into the tunnel’s gloom. “He comes down here with these.” She ticked off the facts. “Not alone—two sets of prints. They meet, not struggle. Someone pins him, binds his wrists, pushes him to the wall, draws that sign . Something's exchanged—see the residue on his fingers? Like he grabbed at something chalky, crushed it.”
Patel shook his head, exasperated. “That’s not much. And how does it end in a skull fracture?”
Quinn pointed to the edge of the bloodstain again. “Look here. No cast-off, no hesitation marks, just the high velocity spatter. One clean blow from behind, delivered with precision.” She stood, trying to feel the rhythm of the space. “Execution, yes, but ritual. Not random. The killer left those for a reason.” She nodded at the compass and token.
Patel frowned, scanning the walls. “So you think this is… what, some cult nonsense?”
“Not nonsense. I’ve seen one of these,” Quinn said, holding up the compass, “in a folder—the Lambert case. Supernatural black market.” She faced him, her brown eyes dark and unyielding. “The Veil Market. Moves location every lunar cycle—every full moon.” She tilted the compass, watching the needle jerk anew. “This would point to its entrance tonight—if we knew how to read it.”
For a moment, Patel ’s skepticism faltered, hesitance beneath his bluster. “You’re saying a banker came down here to buy… what? A spell? Drugs? Bought the wrong thing and his dealer got creative?”
Quinn weighed the compass in her palm, feeling the cold weight of the case closing in. “Or he was followed. Or he owed more than money.” Her eyes flicked back to the wall sigil—the half-familiar threat, the echo of something Morris had told her, voice frantic, hands trembling for the first time in sixteen years.
Patel ’s phone vibrated; he checked it, grimaced. “Press is circling upstairs. Uniforms say a girl—redhead, glasses, loitering at the mouth—was asking for a ‘bone token.’ Sounds mad to me.”
“Don’t let her leave,” Quinn said instantly. “Anyone asking about a bone token tonight is no civilian.”
Patel nodded once, then jogged toward the spiral stairs. The tunnel grew quieter in his absence. Quinn moved back through the scene, her thoughts working methodically: Bruises, not wild violence but controlled. Tokens left behind, but the killer took the time to conceal the entrance. Not robbery, never random blow. Words chimed in her mind, things Morris once said—about “places that hide themselves,” about compasses that point not north but to elsewhere, if you know what to feed them.
She brushed the runes on the compass with her thumb. Protective sigils. Not for the possessor’s safety, maybe—no, protection from detection. For those that walk between. The luminous powder pooled on the corpse’s skin refracted the light, shifting color faintly, wrong for any street drug she knew. Like shimmerdust, the file had said—Collectors’ slang for something harvested from beyond.
She forced herself to breathe and ran through the scene again. Banker down here, with a token and a compass, the right items to enter a place that shouldn’t exist. Killed before he could reach it, or because he’d reached too far.
Above, a faint shout—Patel ’s voice, rough and urgent. Quinn pocketed the compass, covered the sigil with evidence tape, and rose, resolve chiseling her face to stone. The scene was all wrong, and she’d be damned if she let another case slip into the dark, unanswered.
She straightened, military precision in every bone, and strode toward the echo of voices, the trainless dark pressing in behind her like a second skin.