Seven years hence, the ticking ceased. It was not that the gears had failed, nor that the springs had snapped, but that they had been sold for bread.

  The house perished from within, a slow hollowing of the spirit. The fortress of their youth was now a carcass, picked clean by men with ledgers and iron-shod boots. Where the mahogany sideboard had stood, a rectangle of pale, unsoiled wallpaper screamed against the grime of the room, a ghost of better days long dead. The rug was gone, and the chairs were gone, and the legs of the dining table had been fed to the fire but three nights past, devoured by the cold.

  Bella sat upon the bare floorboards, her knees drawn to her chest, surrounded by a red sea of debt. The ledger was a slaughterhouse of numbers. She dipped her quill into a mixture of beet juice and soot, for ink was a treasure known only to those who did not eat bread of sawdust.

  "We bleed," she said, and her voice was flat as a stone. The cold of the room was a physical weight, a fell beast sitting upon her chest, breathing frost into her lungs.

  Torvin did not answer. He paced the length of the room, turning at the wall where the plaster was flayed open like a wound. He had not slept in three days. He was thin, wire-taut, and his eyes burned with a chemical brightness that filled her with dread. He held no charcoal stick, but wielded it like a knife, hewing equations directly into the lath and plaster, for paper was but a memory.

  "The mill foreman asks not for credentials, Torvin," Bella said, her eyes fixed upon the red ink. "He asks for hands. The wage is grain sacks. We may eat grain."

  Torvin halted. He vibrated, a tuning fork struck against hard iron.

  "You seek to calculate the path of a falling star with an abacus, Bells," he whispered. He looked not at her, but at the wall, at the frantic scrawl of geometry that seemed less like mathematics and more like a map of doom. "Linear labor cannot resolve exponential debt. The interest gathers faster than we may bleed. We drown in the shallows."

  "So we starve," Bella said. "We starve whilst you carve riddles into the wall."

  "It is no riddle." He spun about. His shirt hung from his shoulders, oversized and grey as ash. "It is the Null-Space. The Aether grid pulses, Bella. It breathes. It has a rhythm. Systole and diastole. If I find the space betwixt the breaths... we do not merely survive. We siphon."

  He seized his coat. It was threadbare, the elbows patched with sacking.

  "Whither do you go?"

  "To find a variable," he said. "The reckoning stands unbalanced."

  He walked out, and the door rattled in its frame, loose upon the hinges. The wind whistled through the gap, bearing the scent of the city's open drains and the rot of the river.

  Three nights hence, he returned. The storm hammered against the single pane of glass left in the parlor window, threatening to shatter the only barrier betwixt them and the drowning world.

  Torvin did not walk in; he fell in. He was soaked, water streaming from his hair and plastering the thin shirt to his ribs. But he shivered not from cold; he burned. He clutched a bundle of oilskin to his chest as one might hold a newborn babe.

  "Bar the door," he said.

  Bella shoved the heavy iron bolt home. "Where have you been? Father is—"

  "Speak not of Father." Torvin moved to the center of the room and unwrapped the oilskin.

  Brass gleamed in the dim candlelight. Heavy, machined brass. A set of calipers. Not the tin toys of their childhood, but high-grade instrumentation of the Guild, wrought with precision. The price of such a thing was greater than the house itself.

  Bella stared at them, and then the scent of him reached her. Cheap gin. The sharp smell of fear.

  "You have stolen them."

  "I acquired them." His hands shook, yet his touch upon the brass was tender. "They call themselves the Broken Cogs, Bella. Not thieves. Unbound Engineers."

  "Broken Cogs," she repeated. The name was a whisper in the shadow-walks, a tale told by Watchmen to frighten children. Men who dismantled the city to sell it for scrap. "They hang men for such company."

  "They possess the codes," Torvin said, and his voice dropped low. He stepped closer, his eyes huge and dark as deep wells. "They hold the keys to the Deep Conduits beneath the Mage Tower. They scrape not for copper, Bells. They tap the main line."

  The floor seemed to drop away beneath her. "That is treason. That is a hanging offense. One does not tap the main line. You are not a Mage, Torvin. You are Inert. You have no core to hold it."

  "I know I am Inert!" He hissed, then lowered his voice, his eyes darting to the rain-lashed window. "We were born smooth, Bella. The Aether slides off our souls like water off glass. A Mage... a Mage is born with a flaw. A roughness. A burr in the spirit that catches the power as it flows. We do not have the burr. We cannot catch the wind."

  "Then the current will kill you," she said. "Without the spark, you are just fuel."

  "Only if I try to be the vessel," he said. "I am not trying to catch the wind, Bella. I am building a sail."

  He gripped her shoulders, and his fingers were iron. "I shall divert it. I shall find the fulcrum. Do you remember? I taught you this. One cannot lift the world without a fulcrum. I have found it."

  "You have found a noose." She shoved him back. She planted herself before the door, arms crossed, feet braced upon the warping wood. "You shall not go back into the night. I will scream. I will wake the neighbors."

  "We have no neighbors, Bella. They fled when the roof began to weep." He looked at her, and the mania cracked, revealing the terrified boy beneath. "I walk into the only equation that balances. We owe four thousand marks. The mill pays three sacks a week. Do the calculations."

  "I care not for the calculations. I care for the variable wherein you perish."

  He reached into his pocket and drew forth the silver locket. It was tarnished, the chain knotted like a serpent.

  "Yield the locket," he said.

  "No."

  He stepped forward. He fought her not. He simply pressed the cold metal against her forehead. He closed his eyes, pressing his own brow against hers. He smelled of rain and ruin.

  "Keep the casing," he whispered. "I take the idea. I take the 'Reverse' with me. It is the only way to navigate the conduit."

  He pulled back. He pressed the locket into her hand and closed her fingers over it.

  "If I return not," he said, staring into her eyes, "Follow not the logic forward. Do you understand? Forward is doom. Reverse is survival."

  "Torvin—"

  He kissed her forehead, a cold, damp brand.

  "I love you, Bells. Even if the numbers say I should not."

  He turned the bolt. The latch clicked like the hammer of a gun. He slipped into the rain, and the darkness swallowed him ere the door hit the frame.

  The silence that followed was not empty. It was heavy, and it had teeth.

  Weeks bled into months, and the house ceased to be a shelter and became a tomb. The creditors returned. They took the rug, and then the mattress, and then the table Bella had used as a desk.

  Her father watched them take it. He stood by the cold hearth, clad in his best coat, the one with moth holes in the velvet collar. He shouted not. He begged not. He simply watched the furniture depart as if it were a guest he was too polite to detain.

  "It is temporary," he said, smoothing his mustache. "Inventory liquidity."

  This tale has been unlawfully lifted from Royal Road. If you spot it on Amazon, please report it.

  He was not drunk. That would have been a mercy. He was possessed. The silence of the house drove him out, down into the smog-choked bowels of the Lower Ward. He returned smelling of stale smoke and the sweat of desperate men.

  "I saw a man," he told Bella one evening. There was no food in the house. Bella boiled water merely to have warmth in her belly.

  "A man," she said.

  "One-eyed. At the Serpent's Coil. He said he saw her."

  Bella gripped the handle of the pot. "Saw whom?"

  "Your mother."

  The water bubbled, a sound like mocking laughter. "Mother evaporated six years ago, Father. She walked into the fog and returned not. The spoon you sold yesterday bought you a lie."

  "It is not gambling, Arabella!" He slammed his hand against the mantle, and dust puffed up like smoke. "It is the Grand Wager. I traded the silver spoon for a confirmed sighting. A profile in the fog. The chips... the chips are but placeholders for dignity. When I win the pot, I buy back the truth. I buy back the boy."

  "The boy is gone," Bella said. "And the woman never cared."

  "You understand not the stakes," he muttered, turning for the door. "You never understood the stakes."

  He vanished into the fog. He returned not that night. Nor the next.

  Two days later, a fist hammered on the door. Not a knock, but a demand.

  Bella answered it holding a heavy iron ladle. A man stood there, wide as a doorframe, with knuckles like stones. He wore a Guild sash stained with gravy.

  "Repossessing," he grunted. "Tithe and interest."

  "There is nothing left," Bella said. She stepped not back. "The heat within this wood is less than the labor you spend to break it. The floorboards are rot. The wallpaper is mold. You operate at a net loss merely by standing here."

  The man blinked. He looked past her into the hollow shell of the house. He spat on the step.

  "Pathetic," he said.

  He turned and departed.

  Bella closed the door. She slid down the wood until she hit the floor. She didn't weep. Weeping dehydrated the body, and she needed to be efficient.

  She needed to leave.

  She climbed the stairs to the attic. The air above was dry and smelled of dead wasps. The toy chest sat in the center of the room, a battered wooden box bound in iron.

  She knelt before it. Her hands shook. She tried the latch out of habit. Locked.

  Panic rose, a hot bile in her throat. Her things were therein. Her drawings. Her few coins. If the lock had seized...

  It jams because the world is too heavy, Torvin’s voice whispered in the dust. Let it believe it sleeps.

  Bella froze. She looked at the keyhole.

  "Turn it widdershins," she whispered.

  She inserted the key. She turned it not to the right. She turned it left. Widdershins. Against the grain.

  The mechanism clicked not. It exhaled. The internal tumblers slid against each other like oiled snakes, a smooth, serpentine release that vibrated through the iron. The lid popped open.

  Bella pushed it back.

  The chest was empty of toys. No dolls. No wooden soldiers.

  Instead, the bottom was lined with paper. Dense, frantic blueprints.

  She picked up the top sheet. It was drawn on the back of a butcher's wrapper. Abyssal Siphon / Null-Space Geometry / Inversion.

  She traced the lines. She knew the calculations. She had learned it alongside him, by candlelight, speaking a language of numbers that no other soul in the house understood.

  She read the variables. She checked the sums.

  Her breath hitched.

  "He was not manic," she whispered.

  The math held. The geometry was sound. He had found the null-space. He had found a way to draw power from the void betwixt the pulses.

  But at the bottom of the page, circled in heavy charcoal, was the variable of which he had not spoken.

  Bio-Aetheric Catalyst Required. Mass: 9 stone.

  Bella stared at the number. Nine stone.

  Torvin's weight.

  "The variable was you," she said, and her voice cracked. "You fool. You calculated yourself into the furnace."

  He hadn't left to chase a dream. He hadn't left to find wealth. He had realized the only way to pay the debt was to become the fuel.

  She looked at the pile of papers. Her own childhood drawings lay beneath, sketches of birds, of gears, of impossible machines.

  She took the locket from her pocket. She placed the blueprints inside her coat.

  Then she struck a match.

  She dropped it into the chest.

  The dry paper caught instantly. "Tick," the drawing of the bird, curled and blackened. The flames licked up the sides of the box.

  "Goodbye," she said.

  She turned and walked down the stairs, and she didn't look back at the smoke curling under the attic door.

  The city was a grid of closed doors.

  It rained again. It always rained in the lower districts. Gravity pulled the water and the filth down into the deeps, pooling in the gutters where the drains were clogged with the refuse of the world.

  Bella walked. She wore her father's coat, the sleeves rolled up, belted tight with a piece of rope. She carried the calipers in one pocket and the locket in the other.

  She knocked on the door of the Guild of Time-Wrights. A clerk with wire-rimmed spectacles opened the viewing grate.

  "I need work," Bella said. "I can calibrate a mainspring in the dark. I know the friction-laws of brass better than you know your own wife."

  The clerk adjusted his glasses. "The Gambler's girl? The family that tried to leverage a sock drawer against a bank loan?"

  "I am an engineer."

  "You are a liability. We don't hire liabilities. We don't hire beggar-daughters who smell of desperation."

  The grate slid shut.

  She went to the Weavers. The foreman looked at her hands.

  "Too soft for the loom," he said. "Too sharp for the needle. You'd cut the thread merely by looking at it. Begone."

  She went to the scribes. To the bakers. To the sweepers of streets.

  None would take her. She was the daughter of a ghost and a gambler, a girl with math in her eyes and hunger in her belly.

  She stood in the mud outside the Artisan Nexus. The rain soaked through the wool of the coat. She shivered so violently her teeth clicked together.

  She gripped the calipers. They were cold iron in her hand. A weapon. A tool.

  Wind it backward.

  If the clean world wouldn't take her, she would go to the dirty one.

  She lifted her head. She smelled it. Not the clean air of the Aether grids. Not the perfume of the High Artificers.

  Sulfur. Unrefined oil. Coal dust.

  The smell of heresy. The smell of the machines the Guild pretended did not exist.

  She turned left, away from the Gilded Mile, down an alley that looked like a throat.

  The sound grew louder. A rhythmic, ugly, mechanical coughing. The iron pulse of an engine dying and refusing to stay dead.

  She followed the noise to a run-down workshop at the end of a cul-de-sac. The windows were black with soot. The sign above the door hung by one nail.

  Elmsworth & Sons. (The "& Sons" had been painted over with a violent slash of black).

  Bella pushed the door open.

  The noise hit her like a physical blow.

  The workshop was a hellscape. Shadow and fire danced upon the walls. In the center of the room, bolted to the stone floor, was a beast.

  It was made of iron, black and oily. It heaved. It screamed. A massive flywheel spun with terrifying speed, blurring the air.

  An old woman stood in front of it. She wore men's trousers and a shirt stained so dark with grease it looked like leather. Her hair was a gray knot atop her head. She wrestled a lever, her boots skidding on the slick floor.

  "Hold, you bastard!" she roared.

  The engine screamed. The metal casing vibrated so hard Bella felt it in her teeth. The air shimmered with heat.

  Bella looked at the machine. She saw not a monster. She saw a thermal system in critical failure.

  She saw the breath-gate. It was not black. It glowed a dull, dangerous cherry-red.

  The heat-swelling, Bella thought. The brass gate expands faster than the iron manifold. It is seized.

  "Get back, girl!" the woman yelled, looking not around. "She will blow the gasket! She will crack!"

  Bella ran not. She looked at the floor.

  A bucket stood by the door. It was full of street slush, gray, icy sludge skimmed from the gutter.

  Bella dropped the calipers. She grabbed the bucket.

  She walked forward. The heat blasted her face, drying the rain on her skin instantly.

  "What do you?" the woman shrieked. "Get out!"

  Bella swung the bucket.

  She threw it not blindly. She calculated the arc. She accounted for the spin of the flywheel.

  The slush hit the glowing intake valve.

  The water struck the red-hot brass and died screaming. A violent, white expansion tore through the air, and the steam expanded with the force of a detonation.

  A sharp report rang out, the sound of tension snapping like a dry bone.

  The metal groaned. The thermal shock forced the brass to contract. The seizure broke.

  The screaming ceased.

  The engine shuddered. It coughed, a wet, deep sound, and then settled into a rhythmic, ugly idle. The flywheel spun with a heavy, loping cadence, counting out the seconds in iron.

  The steam cleared.

  Bella stood there, holding the empty bucket. Her face was wet with condensation.

  The old woman wiped oil from her eyes. She stared at the engine, and then at the girl.

  "That was stupid," the woman said. Her voice was gravel. "You could have cracked the casing. Heat-shock is a gamble."

  "Cast iron tolerates a four-hundred-degree gradient," Bella said. She dropped the bucket, and it clattered. "The brass valve did not. I forced a shudder to clear the jam. It was the only variable left."

  The woman narrowed her eyes. She looked at the coat. The mud. The hunger.

  "Who taught you to hold a wrench in such a fashion?"

  The name of her brother sat on the tip of her tongue, heavy and bitter as rusted iron. But the anger, the sharp, hot resentment for the kin who had walked out the door and left her with the wreckage, choked it back. Instead, she wiped grease on her trousers and spoke.

  "My father liked the dice. When he lost, he came home and took a hammer to the inventory. I learned to put the pieces back together ere the creditors kicked the door in."

  Elmsworth needed not an apprentice. She desired not one. But she saw the hunger in those eyes, not for bread, but for order in a chaotic world, and she recognized it.

  The Master snorted. It might have been a laugh. She reached behind her and untied the heavy leather apron she wore. She pulled it over her head.

  It hit Bella in the chest. It was heavy. It smelled of ancient oil, sweat, and metal filings. It smelled of work.

  "It pays poorly," Master Elmsworth said, turning back to the machine. "It smells of hell. And I give no breaks."

  Bella put the apron on. The strap was too long; she had to knot it. The leather hung down to her shins.

  It felt like armor.

  She reached into her pocket and touched the silver locket.

  "I start now," Bella said.

  She picked up a wrench.

  The engine chugged on, ugly and alive.

  She wore that apron for five years, until the leather was as scarred as her hands and the smell of sulfur had leached into her very skin. It was a second skin, a shield against the silence her brother had left behind. But tonight, the apron was gone.

  The engine's cough faded into the river's murmur.

  Bella blinked, the scent of sulfur yielding to wet earth. She was not alone anymore.

  She sat by the fire, the cold locket gone from her neck, replaced by the warm stone bird against her skin.

  Across the flames, August watched her, his gaze steady as an anchor. He cleaned his hammer, but his eyes held hers, reading the shadow that passed.

  "The gear," she whispered. "It was not madness. It was survival."

  August nodded, accepting the words as he accepted the stone.

  "We move at dawn," he said softly.

  Bella drew a breath. The past was a ghost; the future, a road. And she was not walking it alone.

  "At dawn," she said.