AI The pavement skidded beneath Quinn’s boots as she lunged forward, her hand closing around the suspect’s collar. Tomas Herrera twisted free with a snarl, his Saint Christopher medallion catching the neon glare from a flickering Soho sign before he vanished into the downpour. She didn’t stop. The chase had never been about the sprint.
He’d taken three strides before she grabbed his wrist—saw the scar there, jagged and pale beneath the artificial light spilling from The Raven’s Nest. The bar’s green sign buzzed like a dying wasp. Herrera didn’t slow. Maybe he thought she wouldn’t follow. Maybe he didn’t know the Tube station beneath Camden was one of his own kind’s nests.
The rain fell vertical, sharp enough to cut through wool and bone. Quinn ducked into an alley, her hand fumbling for the .380 in her jacket. Herrera materialised at the mouth of a drainage tunnel, his olive skin slick with water, his breath a fog in the cold. He brandished a bottle from his pocket—iodine, by the smell. A paramedic’s habit. A cheat’s crutch.
“You’ve got ten seconds, Herrera. And I don’t stop counting when you run.”
He pressed a hand to the brick wall. “You think you’ve got me,” he huffed. “You think this ends in a box room with a report and a cup of tea.” The wall beside his palm cracked, a seam splitting down its length. “Try again when you’ve got more than a pensioner’s reflexes.”
The gap widened with a groan of rusted hinges. Below the alley, a spiral of iron rungs descended into blackness. Quinn’s stomach dropped as she leaned in. Herrera’s grin was a shard of white between grime-streaked brows. “You know what they say about the Thames?” he called. “It don’t just wash things away. It swallows ’em whole.”
He vanished. The door slammed shut. Quinn’s thumb broke the seal of her police-issued tear gas canister. Useless, but it made her feel less like prey when she tossed it through the opening. A hiss echoed down the shaft, no alarm raised. No trap door. The underground moved.
She dropped.
The fall knocked the air from her lungs, her boots scraping over wet metal until her knees crumpled to the floor. Not a station. Not anymore. Ceiling beams hung with frayed cables, their bulbs casting a jaundiced pall over rotting brick tunnels, the scent of mildew and burnt tallow thick. Herrera’s footsteps faded ahead, so she followed a smear of iodine on the damp—a coward’s trail through a place that reeked of charred herbs and rusted secrets.
Her watch ticked once. Ticked again. Each second a percussion beneath the silence . She adjusted her grip on the .380. The Veil Market’s bone token was somewhere in that pocket, cold and grinning.
A lantern swung into view, its chain rattling. Herrera loitered beside a stack of crates piled with dried cholla cactus. A corner of his mind must’ve remembered she’d once caught him stitching up a wound in a parking garage, his gloves a mess of coagulated powder. He knew her methods. So did the others. That’s why they’d run here, not there.
“You’re not even trying to deny it,” he said, turning . His voice was sharp—English learned through textbooks, vowels clipped like a Spaniard’s. “What’s your endgame, Quinn? Arrest me for smuggling blood samples? Charge you for stalking the supernatural?”
She stopped three paces away. “You lost your NHS license,” she said. “Because you didn’t just treat the wounded. You tested them.” Her eyes traced a faded Latin slogan etched into the tunnel’s arch. *Viscera in veritate.* “The ones who shouldn’t have survived.”
Herrera’s jaw tightened. For a moment, the alley cat fury behind his brown eyes thawed. He looked tired. Human enough to make her flinch. “You don’t get to play judge. Not after Morris.”
The name was a gut punch. Quinn’s fingers found the holstered taser on her thigh. “What happened to you on that rooftop three years ago, Herrera? Why’d he wind up six blocks down the river?” Her voice was silk over a blade. “Morris could’ve waited for the ambulance you promised. But he *didn’t * wait, did he?”
Herrera stepped back. The tunnel split now. A rusted iron grate covered one passage, another led to a corridor of velvet -draped stalls. A gong boomed somewhere. The Veil Market was shifting . Every full moon, they said, it swallowed one reality whole to cough up another.
“You know the rules,” Herrera said, his hands flat . “No dead bodies. No knives in the back.”
“Morris was dead by the time we fetched him,” Quinn muttered. “But you? You stitched up his chest in the line of *work *.” She advanced, the gun steady but loose in her grip. “Tossed him in a tube as if the Thames was your bloody fridge.”
A sharp click answered. Quinn froze as Herrera’s thumb pressed against a vial of clear liquid in his palm. His left sleeve rode up, the medallion glinting . “You ever try to drown copper in wine?” he said. “Smell’s the same before it burns your throat.”
The tunnel shuddered. From behind, the grate trembled and fell still. Quinn’s pulse beat in time with her watch . Herrera had a window closing.
A child’s laugh crackled from the market corridor. Herrera vanished from her sightline but not her ears. “They’ll gut you for trespassin’,” came the voice of a woman through the rain’s hiss, tinny and high. “You know where to find a soul, but where’s the thing that carries it?”
Quinn sprinted after the sound.
The Veil Market was alive in a way the dead should not be. Banners embroidered with runes hung from corroded pipes, their red thread bleeding against the concrete. A vendor sold preserved moths in crystal vials, his scales balanced over a ledger scrawled in cursive. The air was thick with ozone and myrrh. Quinn’s shoes stuck to the cobbles. She had a plan—corner him at the edge of the market’s main concourse, flash the warrant for his off-book clinics. She’d built a career on the look of surprise when she did. Not tonight.
“Detective Quinn.”
She turned. A figure in a patched greatcoat regarded her over a tray of obsidian needles. Their hands were gloved in fishbowl-green silk .
“You’re early,” the vendor said. “And you’re not listed on the guest register.”
Quinn fished the bone token from her pocket. It felt like a finger joint. Herrera’s men had left it in the crime scenes as a dare. “I need to speak to Herrera about Morris’s injuries,” she said.
The vendor’s smile was all teeth. “Ask nicely.” They gestured to a nearby vial—dried blood packed in a slurry of glittering ash.
Quinn holstered the gun. “I’m requesting you direct me to the man I was following.”
He tsked. “Requests die down here. Offers swim.”
The market shifted as he said it. Stalls collapsed inward, the corridor narrowing. Quinn pivoted toward a sound—muffled voices. She pushed through a curtain of braided sage.
Herrera waited with a woman in a blood-red dress. Their faces were tight with that shared tension of people who’ve tasted the inside of a lie too many times. The woman’s hair was a tangle of white and black, the same shade as the moth wings on the banners.
“Time’s up,” Quinn said.
Herrera rolled the vial between his palms. “That’s the second time you’ve said that today,” the woman said. Her nails were painted with a kind of quicksilver. “Such a dull thing for a hunter to say.”
Quinn’s gaze locked on Herrera’s medallion. “You got me,” she said. “But this one—she’s not a paramedic.”
“She’s not your partner either,” Herrera said, and the vial shattered .
The concourse erupted in noise. Quinn’s wrist twisted toward her as the watch began to bleed liquid silver through the leather. Herrera’s eyes were gone behind the human mask now, pupils stretched into the dark. “That’s new,” he murmured. “Did you really think the Thames would let you take what you gave it?”
Quinn’s mind backpedalled. Her partner dead, her own nights since spent combing through files that evaporated at sunrise. She’d believed Herrera’s clinic was just another dead-end. But this? This was the same cold she felt when DS Morris’s body surfaced with a crown of drowned flowers around his neck.
“Morris’s notes,” she said. “He wrote about silver in the veins. About a—”
A hand gripped her wrist from behind. Quinn spun but didn’t reach for the gun. The tunnel’s collapse had trapped her. The woman in red now hovered inches from her, the medallion warm in Herrera’s other hand.
“Detective Quinn,” Herrera said. “Meet my supplier. Violette. She’s got an interest in what you’ve taken.”
Violette’s laugh was a blade through silk . Her voice sharpened the air. “He says you’re tenacious. Says you won’t stop until you’ve found the truth.” She gestured to Quinn’s watch . “Let’s see if he lied.”
The woman turned, and the room folded around her. Stalls vanished. Cobblestones became glass. Quinn saw her own reflection in the floor, eyes wide beneath salt-and-pepper brows. Herrera caught her arm.
“Let her look,” he said.
Violette’s dress rippled like a pool disturbed by stone. “You’re not ready for what’s below,” she said. “But your little clique, Detective? They’ll meet their Morris.”
Quinn’s boots struck something spongy. Floorboards—old as the market. Beneath, a cellar pulsed with heat. Herrera’s grip on her wrist was iron.
“Back off,” she said.
He smirked. “You didn’t think the green light was a good time for you.”
Violette knelt, her hand brushing Quinn’s left knee. “This,” she whispered, pressing something into Quinn’s hand. A watch key. “The men who killed your partner didn’t cut clean. Their mark is in your blood. Your body’s a ledger they can read.”
Herrera tilted his head, scar pulling taut. “You’ve got the watch . She’s got the key. You’d be surprised how many monsters like to keep their debts in pocket watches.”
Quinn’s fingers closed around the key, the silver cold now, then warm like a live coal. She turned. The woman in red had already gone. Herrera pressed his back to the cellar door. “I need to know,” she said, “what you’re trading for that iodine you carry.”
“A second chance,” Herrera said. “You want to talk justice for Morris? Then tell me about the ones you bury. The ones who walk away from accidents with eyes too dark for any human.”
Quinn’s watch ticked faster. “He was the only one.”
“Liar.” Herrera’s voice dropped to something feline. “He saw your little friend. The one who visits you on the nights you don’t sleep. That’s why you’re hunting me—because you blame yourself. And you’re not just after proof. You want to drown it. Same as the Thames.”
The cellar door creaked. A whisper of movement. Quinn’s hand flew to her holster. Herrera’s eyes followed.
“Down,” she snapped.
He dropped low. The shot was a man in a moth-eaten pinstripe, his chest blooming with blood as Quinn fired. His head tilted back as he died, a crown of moths lifting from his face like a shroud of white petals. Herrera’s breath caught.
“Not my friend,” he said.
“Wouldn’t be a friend if you saw it coming.” Quinn crouched. The man’s tie was silk but dyed with iron—*not blood, then *—the same shade as the vials of herbs sold in the market. “He was a customer.”
Herrera’s face was a stone wall, but his hands trembled . He pushed past her to the cellar. “I warned you.”
The door swung in. Quinn’s breath caught. Herrera stood frozen.
The room was round, domed like a cathedral’s crypt. Candles glowed blue in iron sconces, their wax pooling over human bones set in the walls. A clock on the back wall had no numbers. A skeleton sat cross-legged at its base, a grin of broken glass where teeth should be.
Herrera’s voice was gravel. “The first time I came here, I brought a man with a severed leg. I mended it. You don’t want to touch those bones now.”
Quinn’s hand hovered by her taser. “Then what’s this one’s condition?”
The skeleton’s head turned.
She fired the taser at Herrera. The charge died in the air, sparks sputtering against a barrier Herrera raised in his palms, liquid silver pooling in the shape of a scalpel.
“Morris should’ve asked about the cure,” he said. “He found the disease.”
The skeleton rose. Quinn’s boots stuck in the wax, but Herrera’s medallion glowed in her direction. “Run,” he said, and she ran.
The blue flames roared to life in the sconces as she climbed. Herrera’s laughter followed, tinny as the child’s earlier. She didn’t turn. Aboveground, the green neon of The Raven’s Nest was gone . The alley was dry. Herrera’s trail had been a lie. The iodine. The vial. The silver in her pocket.
But in her hand, the key had grown warm.
She looked down. A body lay sprawled against the bricks—male, young, tie dyed in blue candle. Quinn pressed her watch to his wrist, the leather cracking where the silver bled out. The watch face went dark.
A phone blared nearby. She answered it.
“Diagnosis: your friend just passed away,” came Herrera’s voice. “Congestion in the lungs, maybe? Or did you think the silver was a joke?”
Quinn dropped the watch . It clanged on stone as a second hand sprouted from the glass, ticking clockwise and counter at once.
She aimed the gun at the corpse’s chest.
“Shoot the dummy,” Herrera said, “and you might learn how the Thames *really * counts.”