At twelve-fourteen and fifty seconds by the sweep hand of her Smiths clockwork wristwatch, Ada Morland tightened the canvas shoulder strap of her check bag. She stood on the oil-stained concrete floor of Unit 4’s rear storage bay, her boots planted six inches from the shimmering oval of the Courtesy Bridge.
Outside on the Harrowby ring road, a twenty-ton aggregate lorry shifted gears with a heavy, air-powered sigh that shuddered through the corrugated metal walls of the heavy-duty estate. In the far corner of the bay, rainwater dripped from a rusted gutter into an empty plastic paint tub with a dull, hollow plink-plink.
Ada checked her breast pocket one last time.
The clockwork brass pressure gauge was nested deep in its canvas slot, its glass face turned inward toward her ribs to protect it from knocks. The ten-inch Bahco wrench was buckled tight into the center sleeve. The roll of yellow PTFE gas tape, the two grease pencils, the cotton rags, the sourdough crust sandwich, and the English Russet apple brought the total weight of the kit to exactly six point eight pounds.
She didn’t feel nervous. She felt the cool, careful focus that always settled over her. Just then, she picked up her tools to trace a live gas line through a stuffy cellar. A tradesperson who let excitement into her hands was the kind of person who stripped brass threads or overtightened a gland nut until the packing blew out.
The watch hand touched the twelve.
12:15 PM.
In the same heartbeat, the air within the brass frame in Lowbank changed. The pale-blue soft glow along the rune-tracks snapped into sharp focus. It burned with the steady, quiet intensity of a well-adjusted oxyacetylene pilot flame.
From deep within the brass casing of the arch came the sound of a heavy clockwork release—a solid bronze pawl dropping into the tooth of a mainspring gear catch.
Above the top door beam, the clockwork slate clicked into its live running register:
Ada took a short, deep breath through her nose, gripped the canvas strap with her left hand, and stepped forward with her right foot.
The transit didn’t throw her through space. It didn’t spin her through a vortex of light or drop her into an endless void.
It felt, in the most physical and mundane sense, like walking through a heavy, chilled curtain of damp wool soaked in lubricating oil. For the space of half a pace, the air pushback thickened against her chest. It pressed against the heavy cotton drill of her boiler suit. The familiar sounds of Harrowby—the diesel engine, the dripping gutter, the hum of the distant bypass—didn’t fade. They cut off instantly, cut as cleanly as a lead pipe under a cold chisel.
Her leading boot came down.
Crunch.
The heavy, oil-resistant nitrile sole of her right boot planted itself squarely on the leveled granite flat stone slabs of the Lowbank washroom. The steel toe cap bit into the thin layer of dry pipe lime and crushed granite screenings Eren had packed beneath the slabs.
The second foot followed. The thick curtain of chilled pushback slid over her shoulders, across her tool bag, and slipped past her trailing heel like water draining from a rubber boot.
Ada stopped. She stood within the red grease pencil square Pella had drawn on the floor, keeping both feet planted wide to establish her balance point.
The sky shift hit her with the physical force of a cold draft entering a heated basement.
Her ears popped twice in rapid row as her ears equalized to the lower air pressure of the river terrace. The air in Lowbank was noticeably heavier, laden with a huge, thick moisture that coated her eyelashes and settled like cold grease on her forehead.
Then the smell struck her throat.
It was entirely unlike the chemical, petroleum-heavy air of heavy-duty West Yorkshire. It was an ancient, organic, unscrubbed smell. The dense, rotten-egg soot of bituminous river coal burning in hundreds of unlined hearth chimney pipes. The sour, pungent, yeasty steam of Sister Merrow’s cabbage and mutton broth drifting through the oak door. And the chalky, bitter-salt bite of damp lime mortar leaching from the stone seams.
Beneath all of it, thrumming through the soles of her work boots with a slow, four-beat high-pressure rhythm, was the heavy silt stench of the Gray Rush—a vast, cold volume of river mud, rotting river reeds, and raw tidal silt moving relentlessly against the stonework seawall forty yards away.
Above the arch, the clockwork countdown clock gave a sharp, metal clack.
The brass indicator dropped: 23m 59s... 23m 58s... 23m 57s...
A tiny balance wheel, visible through a glass check port in the upper casing, ticked back and forth with steady, unflinching care, counting down the twenty-four minutes of her lunch break.
Ada didn’t look up right away. She lowered her chin, exhaled slowly through her mouth to clear her Eustachian tubes. Then she rolled her shoulders against the weight of the canvas strap. She took three slow, deliberate breaths, tasting the coal smoke and the cold river damp.
Her knees were steady. Her balance was true. There was no dizziness, no nausea, and no static tingling in her fingers.
She looked down at her feet. The gray granite slabs beneath her boots were cold and solid, their dressed edges mortared with coarse river sand and high-pressure lime. The chalk lines Pella had drawn were razor-sharp, boxing her into a four-foot landing square that gave clear clearance to the floor drain.
Ada reached out with her gloved knuckle and tapped the inner door post of the brass arch.
The metal gave back a short, heavy ping, dense and dead, like tapping an eight-inch cast-iron gate valve on a district heating main. She traced the open gap in the rune-track with her thumb. The cut was clean, filed through with an ordinary bastard file. That left half an inch of bare, unbridged metal where the magical circuit had been deliberately cut.
“Good filing,” Ada murmured to herself. “No burrs on the edges. If there was a burr, you’d get high-voltage eddy arcing across the gap.”
She looked up.
Standing six feet across the scrubbed flat stone slabs, framed by the yellow, wavering light of a single animal fat lamp mounted on a cedar bracket, was Pella Rook.
The young apprentice summoner was smaller than Ada had pictured from the sound of her voice through the brass horn. But she stood with the balanced, watchful stance of someone who spent her life working around heavy loads. She wore a worn, bottle-green wool apprentice tunic, its college crest carefully unpicked with a razor, patched at the elbows with greased harness leather. In her left hand she held Hal Rook’s brass measuring tongs, their jaws closed, resting against her canvas work apron.
Beside her stood Eren Tal, a broad-shouldered young man with wood shavings clinging to his wool waistcoat and a dark smudge of axle grease across his jaw. His right hand rested casually on the handle of a four-pound carpenter’s mallet tucked into his belt. But his dark eyes were fixed on Ada’s steel-toed boots with the skilled scrutiny of a craftsman inspecting a new joint.
On the corner of the low timber bench sat a clay pot mug, venting a thin, fragrant curl of steam into the chilly air. It smelled of boiled tea and dried chicory root, dark and bitter.
Ada shifted the canvas tool bag from her shoulder. That let the six-point-eight-two-pound bundle rest against her thigh.
“Well,” Ada said, her dry West Yorkshire accent cutting through the humid, soot-thick air of the washroom like a sharp drawknife through green ash. “Your ceiling could do with a proper two-coat damp-proof membrane and some cavity drainage, love, but at least the floor doesn’t rock under your heels.”
Pella let out a slow, steady breath, her shoulders dropping half an inch from their defensive lock. She stepped forward to the white chalk staging line, Hal Rook’s brass measuring tongs held loosely at her side.
“Welcome to Lowbank, Ada,” Pella said quietly. Her voice had the slight, dry rasp of someone who had spent the morning chipping pipe lime in an unheated room. “The floor was two inches low on the riverward corner. Eren levered the flags and packed them with granite screenings before we set the baseplates.”
Eren stepped forward, his eyes traveling from the heavy brass eyelets of Ada’s canvas bag down to the thick nitrile soles of her work boots. He reached into his leather apron pocket, pulled out an ash shingle, and used a piece of white chalk to mark the time: 12:15:22 PM.
“Those boots,” Eren said, his voice deep and deliberate. “The toes are capped with steel?”
“Hardened carbon steel,” Ada replied. She tapped the toe cap of her right boot with the knurled nose of her Bahco wrench. The metal gave off a clear, ringing click. “Rated to take a two-hundred-pound boiler casting dropped from waist height without crushing your toes. If you work around live flanges, you don’t wear soft cowhide.”
Eren gave a single, approving grunt. “Sensible. In my yard, an apprentice who drops an oak felloe on bare leather spends two weeks limping with crushed metatarsals. What’s the bag made of?”
“Twenty-ounce cotton duck,” Ada said, swinging the canvas roll onto the scrubbed timber bench. It landed with a solid, metal clatter of heavy wrenches and brass fittings. “Double-stitched with rot-proof flax thread, waterproofed with lamp-wax. It keeps the tools dry when you’re working in a flooded coal cellar under a Leeds terrace.”
She unbuckled the two leather retaining straps, letting the canvas unroll across the cedar planks.
The tools lay in their single stitched pockets. The ten-inch Bahco wrench with its phosphate-blackened jaws. The heavy brass dial pressure gauge with its beveled glass lens and Bourdon tube gearwork. The three yellow rolls of commercial PTFE gas tape. The nine-inch solid brass drift. The bundle of boiled cotton rags. And the two red grease pencils.
Beside the tools sat her lunch. The thick sourdough crust sandwich wrapped tight in greaseproof paper, and the English Russet apple.
Pella looked down at the tools, her fingers tightening slightly around her father’s measuring tongs. There were no silver runes engraved on the steel handles. There were no glass vials of captured elemental essence, no glowing summoning seals. No velvet-lined wooden presentation boxes like the ones carried by the senior exam guards of the College of Summoners.
Every tool was bare, functional, and built to survive grease, lime, and high pressure. The steel of the wrench bore the fine hairline scratches of twenty years of hard labor, its knurled thumbwheel polished bright by human skin.
“It looks like shipyard gear,” Pella remarked. She looked from the Bahco to the brass dial gauge. “Hal, my father, used to say that if a tool needs velvet to keep it working, it doesn’t belong within three miles of salt water.”
“Your father had his head screwed on right,” Ada said. She turned, looking around the nine-by-twelve-foot stone chamber.
The room was spartan, damp, and functional. Along the north wall ran the four-inch lead waste pipe that drained Sister Merrow’s back kitchen wash-troughs. The pipe was old, gray with lead oxide, and swollen into an ugly, bulbous gout where an ancient solder wiped joint met the wet stonework. A slow, steady drip of greasy, gray dishwater was weeping from the lower collar. It hissed as it struck the hot coals of an iron fire bowl Eren had set near the floor.
Above the arch, the clockwork countdown clock clicked again: 22m 45s.
Ada rolled up her navy cotton sleeves. She showed forearms thick with ropy muscle and scarred with faint, pale white lines from old copper pipe cuts. She reached into her tool roll, lifted the ten-inch Bahco wrench. Then she gave the thumbwheel a half-turn with her calloused thumb.
“Right,” Ada said, her gaze steadying on the bulging lead collar. “Twenty-two minutes left on my lunch break. Let’s see what kind of mess your local plumbers left behind.”