Dawn broke over Sector 7 in streaks of bruised zinc and rotten-egg yellow. In the back nook of the pump house clinic, the cast-iron stove had cooled to a heap of gray embers. That left the air smelling of damp soot, stale chicory, and the sharp, vinegar tang of formalin fixative.
Arthur Vance sat at the low cedar workbench. His eyes burned with the dry grit of an all-night watch. To his left lay three glass petrie dishes containing sliced cross-sections of the dead mastiff’s lung lobes. In the gray morning light, the rainbow-bright blue resin filling the alveoli looked like polished turquoise enamel rather than organic tissue.
A muffled clatter came from the rear feed pantry.
Arthur turned his head.
Grimm was standing between two stacked sacks of barley flour. In his jaws, the black glass-boned hound held a thick, cured beef thigh bone. One of four prize marrow bones Toby had traded two copper tokens for at the butcher’s stall the last evening. The bone was already splintered down the center, cracked by twenty-four hundred pounds of jaw pressure.
As Arthur’s gaze locked onto him, Grimm froze.
The hound’s ears flattened backward against his skull. He didn’t growl, and he didn’t bolt for the back alley door. Instead, with painful, measured slowness, Grimm turned his four heavy paws around, took three stiff paces toward the far corner of the brick foundation. Then he pressed his wet, soot-black snout directly into the ninety-degree stonework angle.
He lowered his brow, closed his golden eyes tight against the red mortar. Then he went fully motionless.
His back was entirely exposed to the room. His flanks remained locked in rigid discipline. In the hound’s canine calculus, the physical law was total: if his eyes couldn’t see Arthur, Arthur couldn’t see him.
Arthur watched the dog for five long seconds. The tension in Arthur’s shoulders softened by a fraction.
“I can see all forty-eight pounds of you, Grimm,” Arthur said, his voice flat and dry. “And the bone is on Toby’s personal account. When he wakes up, you’re going to listen to forty minutes of double-entry bookkeeping.”
Grimm didn’t move an inch. He merely pressed his nose a tiny fraction of an inch deeper into the brick joint, as though attempting to phase through the mortar by sheer power of denial.
The hall curtain twitched, and Toby Mallow stumbled into the workspace. His curly brown hair stood up in a wild rooster comb on the right side of his head, his glasses were fogged from the steam of a dented tin pot of hot chicory. Barnaby trotted at his heels, snuffling eagerly at the scent of chicory grounds.
Toby stopped short, staring at the black tail and hindquarters protruding like an iron monument from the corner.
“Is he... Is he in the corner again?” Toby asked, blinking behind his lenses. “Wait. Is that my beef thigh bone? Arthur, that bone was supposed to flavor our cabbage soup for three days! I negotiated with Master Hobb for twenty minutes in the freezing rain!”
At the word bone, Grimm’s left ear gave a single, reflex twitch. But his snout remained welded to the brickwork.
“Put the kettle on the trivet, Toby,” Arthur said, gesturing toward the workbench. “We have worse problems than cabbage soup.”
Toby set the kettle down, his nervous energy shifting instantly. His eyes fell on the three petrie dishes. He pulled a brass-cased stool to the table, sat down. Then he pulled a thick, leather-bound register from beneath his arm. “I checked the town water maps while you were finishing the stitching. Gate Four isn’t just an overflow ditch, Arthur. It’s the main drainage channel for the Academy’s upper hill paddocks. It flushes into the lower heavy-duty canal, right where forty foundry teams water their draft beasts every morning at six.”
“Look through the lens,” Arthur said.
He reached into his breast pocket. Then he drew out his main careful test tool: the Zeiss-Vanguard Monocle Loupe (Mk. IV). Crafted from blackened silver-steel and ground brass, the instrument featured four nested sight rings fitted with care-cut rift-quartz prisms and micro-engraved focus dials. Arthur clipped the spring-steel arm over his right ear, seated the tube-shaped eye against his orbit. Then he clicked the lowest focal ring into position.
A soft hum of internal aetheric flow-charge rang through the monocle’s quartz elements.
Arthur swung the brass sample arm of the bench microscope into posture, placing a micro-thin section of the blue lung cast directly beneath the objective. He leaned in.
Through the quartz optics, the mundane world dissolved into cellular ground shape.
At four-hundred-times zoom, the blue substance revealed its man-made stonework. It wasn’t an organic secretion. It was a lattice of man-made polymer chains. Long, repeating hydrocarbon spines spiked with nitrogenous rings and heavy man-made peptide side-chains.
Arthur reached for a glass dropper, touched a droplet of acidified ethanol to the edge of the cover slip. Then he watched the chemical reaction front sweep across the field of view.
As the acid contacted the polymer, the blue dye dissolved into clear solvent. It exposed a tiny, repeating set of artificial genetic codons etched into the peptide backbone. Every sixty base-pairs, an atom-deep manufacturer’s tag had been cross-linked into the man-made protein. A five-ring benzene cluster capped with a fluorinated ester group.
It was an indelible, chemical serial number.
Arthur dialed the monocle’s fine-scale ring to the left. The quartz prisms caught the light, and his optic nerves flared with cold, amber-gold script as the [Ancient Taxonomy Engine] timed together with the magnifying glass’s sight tracking data:
Arthur pulled back from the eyepiece. The air in his chest felt cold.
“Compound 94-B,” Arthur murmured.
Toby’s hand jerked, slopping hot chicory over the rim of his tin mug. “Compound ninety-four-what? ApexBio? The military bio-tech cartel in the Central Capital? What’s an ApexBio compound doing in the lungs of a slum boiler-hound?”
“It’s a sped up growth steroid,” Arthur said. His voice dropped into the icy clarity he used when diagnosing fatal malpractice. “A heavy-chain peptide designed to force myofibril hypertrophy in war beasts. It was developed to bulk up second-tier combat hounds and siege drakes in three weeks instead of eighteen months. But it has a fatal chemical defect.”
Arthur tapped the edge of the petrie dish with the tip of his razor knife.
“The carrier ester is thermally unstable,” Arthur continued. “At surrounding storage heat levels below thirty degrees, it remains a clear, thin liquid that can be mixed into grain mash or dissolved in drinking water. But the moment it enters an animal’s blood-flow system and warms to thirty-nine degrees—canine inner body heat—the ester bonds cross-link. The molecules polymerize into an elastomeric resin. It leaches through the lung-sac-tiny blood vessel membrane and turns the tiny air pockets into solid plastic.”
Toby stared at the blue slides, his face paling under his freckles. “If it turns to plastic at thirty-nine degrees... Every beast that drinks it’s going to suffocate from the inside out.”
“Every single one,” Arthur confirmed. “Within forty-eight hours of ingestion.”
Toby scrambled through his leather satchel. He pulled out a stack of blue carbon-copy shipping manifests stamped with the ironfang cog of the academy supply depot. His fingers trembled as he leafed through the pages, muttering shipping codes under his breath.
“Two weeks ago,” Toby whispered, his finger stabbing a smeared ledger line. “Special Consignment Forty-Four. Signed by Academic Dean Horatio Pendelton’s personal registrar. Forty high-pressure iron drums delivered to the private research pens behind the Vance Clan estate at the upper academy. Description: Agricultural Fertilizer Additive, Grade Four. Shipped from the ApexBio salvage docks in the Outer Ring.”
“And who authorized the payment?” Arthur asked.
“Gregory Vance,” Toby breathed, his voice barely heard above the wind rattling the pump house shutters. “Senior Instructor Gregory Vance signed the release voucher from the clan discretionary training fund. Fifty thousand credits. They were trying to bulk up Julian’s second-string war hounds for the upcoming Vanguard Check trials. They wanted to show an entire cohort of Bronze-Rank beasts with double the normal muscle thickness to impress the High Command scouts.”
The pieces snapped together with horrifying sharp-angled care.
House Vance had bought black-market military surplus at discount prices to cheat the academy trials. But when they dosed their test beasts in the upper paddocks, the hounds began choking in their pens.
“They realized the batch was defective,” Arthur said, his jaw muscles cording. “If a Vanguard bio-safety checker discovered forty drums of banned military mutagen on academy grounds, Pendelton would lose his dean’s chair and face military trial. Gregory would be stripped of his teacher rank and remanded to the penal trenches.”
“So they dumped it,” Toby said, horror rising in his eyes. “They didn’t burn up it. High-heat dangerous chemical incineration costs eighty credits a drum and leaves an official carbon-waste registry trail. Pendelton didn’t want a trail. So they flushed the drums straight down the northern drainage water gates.”
“Straight into Gate Four,” Arthur said. “Straight into the commoners’ troughs. To them, slum beasts are disposable trash. If fifty cart-dogs and work hounds drop dead in Ward Nine, the guild masters write it off as gutter rot, the carcass wagons haul them to the bone-boilers. The evidence dissolves in the river.”
Beside the brick wall, Grimm finally pulled his head from the corner.
The jet-black hound trotted soundlessly across the flat stone slabs, stopping beside Arthur’s knee. He didn’t look at the broken bone on the floor. His nostrils flared as he caught the sharp chemical odor rising from the petrie dish. A low, underground shaking hummed in the beast’s chest. Twenty cycles of pure, hungry hatred that made the glass beakers on the shelf hum in sympathy.
Arthur laid his hand on the hound’s thick neck, feeling the rock-hard thickness of the jet-black bone beneath the midnight fur.
“Four hundred beasts drink from Gate Four every day, Toby,” Arthur said quietly. “Old Corvin’s dog was just the first to drink from the first concentration plume. Within twelve hours, the diluted ester will spread through the entire lower drainage basin. Hundreds of animals are going to drown on dry land.”
Toby swallowed hard, adjusting his wired glasses with a shaking finger. “Arthur... What do we do? We can’t go to the City Guard. Pendelton sits on the town judge board. The guards would arrest us for slander before we finished reading the settling.”
“We don’t go to the guards,” Arthur said. He picked up his razor knife and carefully scraped a thread of the blue resin into a sterile glass vial, sealing the rubber stopper with a drop of hot lamp-wax. “The law in this city is bought and paid for. But the chemistry isn’t.”
Arthur pocketed the vial, his eyes cold and dark.
“Heseltine told me there’s one person in this academy who hates corporate patents more than he does,” Arthur said. “Get your coat, Toby. We’re going to the sub-basements of the chemical wing.”