AI The rain soaked Camden’s high street into a blur of neon and wet asphalt, and Harlow Quinn hunched her shoulders against the chill as she pried open the rusted metal door marked NO ENTRY, half-hidden between a vape shop and a closed record store. She’d stolen the bone token from a peddler she’d arrested for selling cursed amulets two months prior, its edge worn smooth where she’d rubbed it raw in her pocket all week, and when she held it up to the blackness of the abandoned Tube station’s stairwell, it glowed faint blue, the lock on the door clicking open before she could turn the handle. The Veil Market’s entry rule was non-negotiable, and Harlow had spent a year chasing every loophole, every scrap of information to get inside the hidden supernatural bazaar that moved locations every full moon. Last night’s full moon should have emptied this old Camden Road Tube station, but from the chaos of half-crated goods and tarps strewn across the northbound platform, no one had gotten around to relocating.
The air shifted the second she stepped off the last stair, abandoning London’s exhaust and damp for mildew, burnt myrrh, and a sharp, coppery tang she’d only smelled once before: the day she found her partner, DS Tom Morris, dead in a Whitechapel warehouse three years prior. A young uniformed PC, Hale, the one she’d called in with a fake report of a squat fire to legitimize her presence, lurched away from the tunnel wall, his face ashen. “Detective,” he said, his hand clamped around his radio like it was a lifeline. “Jenkins is with the body. None of these people will talk to us. They just… stare. Like we’re the intruders.”
Harlow nodded, her closely cropped salt-and-pepper hair brushing the collar of her leather jacket, her sharp jaw set with the military precision that had defined her 18 years of decorated Met service. The worn leather watch on her left wrist, a gift from Tom the day they made detective, caught the flicker of a string of fairy lights strung between stalls, and she glided down the platform, her boots silent on the cracked concrete. She’d seen every murder a human could commit, but whatever had killed Tom wasn’t human. She’d found him slumped against a warehouse wall, his body drained, a tiny black pinprick at the base of his neck, no weapon, no witness, the case stamped unsolved six months later. She’d never stopped chasing it, and the anonymous tip that landed in her inbox two days prior—Shade artisan dead at Camden Veil, knows what happened to your old partner—had brought her here.
PC Jenkins stood sentry at the last stall, its frame draped in black oilcloth, the body of the Shade artisan, Kael, slumped face-first over the wooden counter. “No signs of struggle, Detective,” Jenkins said, stepping back, his voice thin. “Coroner’s en route, but it’s like he just dropped. Only mark’s that tiny hole in his neck. Looks like a needle stick. Probably a bad batch of something.”
Harlow leaned over the counter, her leather jacket brushing a pile of brass gears, and caught the same iridescent black fluid seeping from Kael’s neck, soaking into the pine countertop. It was the same substance she’d wiped from Tom’s neck three years prior, wrong in a way her trained eye couldn’t name until a voice from the stall’s back curtain pulled her focus sharp.
“It’s shadow-bane. Banned alchemical substance. Kills any being with supernatural blood in under ten seconds. Doesn’t leave much trace, unless you know what you’re looking for.”
Harlow turned, her hand drifting to the handcuffs on her belt. Eva Kowalski stood in the shadow of the curtain, her curly red hair falling in a mess over her round, smudged glasses, freckles stark against her pale, freckled cheeks. A worn leather satchel bulged with books over her shoulder, the spine of a tattered copy of *The Key of Solomon * sticking out the top, and she kept tucking a strand of hair behind her left ear, over and over, the nervous tic Harlow had noted in the file she’d built on the 26-year-old Oxford grad. Eva was Aurora’s childhood friend, a research assistant in the British Museum’s restricted archives, part of the clique of occult researchers Harlow had spent two years tracking, the same group she’d suspected of covering up Tom’s death.
“You’re Eva Kowalski,” Harlow said, her voice cold . “Explain how you know what shadow-bane is, if you’re just a museum archivist.”
Eva’s jaw tightened, the nervous tuck pausing for half a second before she did it again. “I research banned alchemical goods for the Museum’s archives. The Veil Market banned shadow-bane five years ago after it killed a Brixton coven. Only long-standing, trusted clients can get it. Someone Kael knew killed him. That’s the only way he’d have let them get close enough to inject him.”
The uniforms had bought the overdose theory, written the death off as a black market drug deal gone wrong, but Eva’s interpretation had shifted the first layer of the mystery. Still, Harlow didn’t trust her, not yet. She knelt, her knee scraping the concrete, and picked up a small brass compass half-tucked under a crate of glass vials, its casing crusted with verdigris, its face etched with swirling protective sigils she didn’t recognize. The needle spun so fast it blurred, humming warm against her palm, a faint thrum that made her teeth ache.
“What’s that? A cheap antique?” Jenkins asked, leaning in.
“It’s a Veil Compass,” Eva said, stepping forward, her hand outstretched before she pulled back, like she was scared to touch it in Harlow’s presence. “Kael made them. Shade artisans are the only ones who can. They point to the nearest supernatural rift or portal. He only made three a year, never let them out of his sight unless they were paid for. That one shouldn’t be on the floor.”
Harlow turned the compass over, the hum rising, and glanced past Eva at the workbench lining the stall’s back wall. Six half-finished compasses sat in a row, their needles all frozen, pointing straight at Eva’s bulging satchel. The finished compass in her hand spun wild, drowned out by whatever was in that bag, throwing its signal off. The uniforms hadn’t noticed the oddity, Eva had only just pieced together that the compass was malfunctioning , but Harlow’s trained detective’s eye caught the thread, pulled it tight.
“Open the bag,” she said, standing, her voice sharp enough to cut.
Eva hesitated, then unslung the satchel, dumping its contents on the workbench: tattered academic texts, a vial of holy water, a set of bone runes, and a small wax-sealed package that glowed faint blue the second it hit the wood. All seven compasses’ needles jerked, locking onto the package, the spinning in Harlow’s hand stopping dead to point at the wrapped bundle. She picked it up, snapped the wax, and pulled out a second Veil Compass, its needle steady, pointing straight at the Tube station’s stairwell, the direction of the Whitechapel warehouse where she’d found Tom. Tucked in the compass’s brass casing was a crumpled receipt, dated three years prior, made out to DS Thomas Morris, paid in full for one custom Veil Compass, pickup upon completion.
Harlow’s breath caught. Tom had ordered the compass. He’d suspected the case they were working had supernatural ties, had hired Kael to build him a tool to track the portal he’d gone into to investigate, the portal that killed him. Kael had only just finished it, had called Eva to pass it to Harlow, just like Tom had asked him to if anything went wrong. But someone had gotten to Kael first.
She leaned around the counter, prying Kael’s cold, curled left hand open to reveal a crumpled syringe cap tucked in his palm, a partial fingerprint smudged into its plastic. She pulled out her work phone, snapped a photo, and ran it through the Met’s internal database , the match popping up ten seconds later: DCI Richard Voss, her boss, the man who had signed off on Tom’s case being closed, who had warned Harlow to stop chasing “fairy tales” or lose her job. Voss had been here. He’d killed Kael to keep the compass from reaching her, the same man who had covered up Tom’s murder had struck again.
Eva stared at the receipt, her face pale, and finally stopped tucking her hair behind her ear. “Tom called me the night he went into that warehouse,” she said, her voice quiet . “Told me if he didn’t come back, to wait for Kael to finish the compass, give it to you. Said you’d know what to do with it. I’ve been waiting three years.”
Harlow looked down at the two compasses, the black fluid still seeping from Kael’s neck, and gripped the custom compass in her hand. Everyone else had seen a random black market overdose, a supernatural hit gone wrong, but she’d seen the thread connecting Tom’s death to Kael’s, the cop in her own unit who had spent three years covering his tracks, the first piece of a puzzle she’d spent years chasing. She wasn’t going to stop until every last person involved burned.