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"Move."
Nora shoved Samuel sideways as the claw punched through stone where his head had been. Dust exploded across the street. People screamed, ran, shoes scraping over broken glass.
Samuel stared at her. "You just—"
"Don't." She grabbed his coat, yanked him down. Another claw swept over their heads. "Run."
"I'm not—"
"Then keep up."
Three automata stepped through the smoke. Blue eye-lenses locked on Samuel. Not her. Him.
Wrong.
The machines were built to protect the Inspectorate. They didn't turn on their own officers unless someone with authority gave the order.
Evelyn Crowe's voice still buzzed through the brass box by the station doors.
*Bring Nora Venn back alive.*
Alive. Not arrested. Not charged.
Brought back.
Nora's fingers tightened around the mechanical heart. The casing was warm now. Too warm. Tiny gears spun behind cracked glass, matching the beat in her wrist.
Tick.
Her pulse jumped.
Tick.
The blue marks under her skin brightened.
Samuel noticed. His eyes dropped to her wrist, snapped back to the machines. "What's that thing doing?"
"Ask the woman who ordered you killed."
"That's not an answer."
"It's the only one I've got."
A rifle cracked behind them.
Samuel shoved her behind a pillar. The shot punched sparks where she'd been standing.
"Stay here," he said.
Nora peeked around the stone. "You're gonna shoot six armored machines with one pistol?"
"Seven."
"There are *seven*?"
He leaned out, fired twice. Hit the nearest automaton in the lens. It staggered. Another took its place.
"Now there are eight," Samuel said.
"Great plan."
"Got a better one?"
Nora looked at the heart.
The casing had split along one side. Inside, copper teeth turned in a crooked rhythm. One tooth caught every third rotation. That tiny scrape—she'd heard it under the royal train before it exploded.
The heart wasn't dead.
It was damaged.
And it was responding to her.
Nora wiped blood from the cut on her palm. The moment it touched metal, the heart snapped open.
A needle pushed out and pierced her skin.
She screamed.
Pain shot up her arm. Not sharp. Not hot. Like someone hooked wire into her bones and pulled.
The heart began to turn.
Once.
Twice.
Her knees buckled.
Samuel caught her around the waist, dragged her behind the pillar as a claw smashed through stone above them.
"Nora." His voice was close to her ear. "What happened?"
"Get off."
"You're shaking."
"Still not your problem."
"It became my problem when they started hunting me because of you."
She shoved his arm. Her hand barely moved. Her fingers had gone numb. Blue light crawled from her palm to her elbow, each gear turning with her heartbeat.
The mechanical heart clicked.
Wet.
Like a breath.
Nora stared at it. "No."
It clicked again.
Samuel crouched beside her. "What?"
"It's not supposed to do that."
"Neither are you, apparently."
She shot him a look.
He didn't smile. His face had gone pale, but his pistol stayed steady. That was the thing about Samuel Grey—he could look terrified and still aim like he had all day.
The automata moved around the pillar.
Samuel rose, fired. One shot struck a joint. The automaton's arm dropped. Its other claw came up.
Nora grabbed his sleeve. "The heart can stop them."
"You know that how?"
"I don't."
"Wonderful."
"It stopped one."
"It *hit* one."
"Same thing."
"No, it's really not."
The heart pulled at her hand.
Not physically. There was no hook, no cord. But she felt a direction inside it. Down. Through the station doors. Into the interrogation tower.
The Inspectorate tower rose above the square, all black stone and brass windows. Red warning light spinning near the top. Every window sealed. Every door locked.
The heart wanted to go there.
Of course it did.
The tower had been built over the oldest power chamber in Veyra. Nora had stripped parts from its outer pipes as a kid. She knew the old system. Knew where the service tunnels ran.
She also knew it was full of armed inspectors.
Samuel fired again. The shot cracked against an automaton's shoulder. It kept coming.
"Nora," he said, "we need to move."
"The tower."
His gaze followed hers. "Absolutely not."
"The heart's pulling me there."
"Then pull back."
"I'm trying."
The heart clicked faster.
The blue marks spread beneath her sleeve.
Pain ripped through her chest. Nora folded over, gasping. Her hand locked around the heart. A memory flashed behind her eyes.
A white room.
A woman shouting.
Metal restraints.
Nothing.
She hit the ground on one knee.
Samuel grabbed her shoulder. "Talk to me."
"Don't touch me."
"You're bleeding."
"I said—"
The next rotation tore the words out of her.
The heart was taking something. She could feel it. Not blood. Not heat. Years, maybe. Strength. The part of her that kept her standing through twelve-hour repair shifts and three days without food.
Every turn left her weaker.
Every turn made the heart faster.
The nearest automaton raised its claw.
Nora looked at it. Then at Samuel.
"Get us inside."
Samuel's jaw tightened. "You said the tower."
"Get us inside the tower."
"You have a death wish?"
"No. I have a machine trying to eat me from the inside. I'd like to know why."
That made him pause.
Just long enough.
Nora snatched his pistol and fired at the control box above the station doors. The lock blew apart. Doors opened with a deep groan.
Samuel stared at her. "You stole my gun."
"You can complain after we're not dead."
"That's my gun."
"Then keep up."
They ran.
The automata charged behind them, claws striking tile hard enough to crack it. Samuel fired over his shoulder, forced one back. Nora crossed the threshold and nearly fell when the heart pulled again.
The tower swallowed them.
Doors slammed shut. A claw punched through the gap before the locks engaged. Samuel kicked it free, threw his shoulder against the door until the gears caught.
Three seconds. Just breathing.
Then every lamp in the entrance hall went blue.
Samuel turned slowly toward her.
Nora stood beneath the lights, heart pressed to her chest. The casing had opened wider. Thin metal limbs unfolded, reaching toward the walls.
A low pulse moved through the tower.
The floor answered.
Pipes rattled behind plaster. Old gauges spun hard enough to crack their glass. Somewhere above, a lift cable screamed.
Nora staggered.
Samuel caught her.
This time she didn't push him away.
His hand was warm against her back. His breath brushed her temple.
"Tell me what to do," he said.
"I'm fixing it."
"You're dying."
"Not yet."
"That's not good enough."
"It's what I have."
The heart's broken tooth caught.
Nora saw the fault in her head. Saw the crooked gear, the damaged axle, the pressure building behind the inner plate. The knowledge didn't arrive like a thought. It was already there, buried under years of grease and scrap metal and nightmares she could never remember.
She knew where to press.
Knew what to break.
Knew what the heart needed.
Blood.
Nora bit into the cut on her palm, pressed it against the open casing.
Samuel grabbed her wrist. "Stop."
"Let go."
"That thing's draining you."
"It'll keep draining me until it works."
"Then we find another way."
"There is no other way."
"You don't know that."
"I know machines."
His fingers tightened around her wrist. "You're not a machine."
The words hit harder than they should've.
Nora looked at him. Samuel looked angry now. Not afraid. Angry at her. Angry at the heart. Maybe angry at the whole damn city for putting them in this hall.
The mechanical heart beat between them.
Once.
Tower lights flared.
Twice.
Metal shrieked through the walls.
Three times.
Every locked door in the tower blew open.
The impact threw Samuel backward. Nora slammed against a column. Her palm stayed attached to the heart. Blue light burst through her fingers.
Machines woke all around them.
Ceiling guns spun from their mounts, fired into the stairwell. Filing automata tore loose from charging racks. Brass messenger birds burst from a wall cabinet, flew straight into the lamps. A lift shot upward without a cable, taking half the floor with it.
Red warning symbols flashed across every glass panel.
CORE BREACH.
UNAUTHORIZED KEY.
RESTART SEQUENCE.
Nora couldn't breathe.
The heart beat again.
Pain became everything.
Her back hit the floor. Her vision narrowed to Samuel crawling toward her through falling brass and shattered glass.
"Nora!"
She heard him. Far away.
The heart was inside her chest now. Or she was inside it. No difference. She felt each gear grinding through her nerves. Her teeth knocked together. Her fingers curled around the casing while energy poured out of her in hot, bright waves.
She wanted to let go.
Wanted to tear it apart.
But the crooked tooth was still stuck.
One more turn.
Just one.
Nora forced her thumb into the gap between the gears.
Metal bit through her nail.
She screamed. Shoved.
The broken tooth snapped.
The heart stopped.
For one awful second, the whole tower went silent.
Then it beat.
The sound was huge.
Not a click. A deep mechanical thump that shook the floor, punched through the walls. Tower windows exploded outward. Blue light raced along every pipe in Veyra, spilling down streets, into sealed buildings.
Far beyond the tower, dead streetlamps blinked on.
Old rail lines sparked.
A hundred dormant machines turned their heads at once.
The patrol automata outside froze mid-attack. Claws dropped. Lenses went dark.
Samuel reached Nora, pulled her away from the heart.
It came free with a wet tearing sound.
Nora gasped. Blood ran from her palm, her nose, one ear. She tried to sit up. Her arms gave out.
Samuel caught her against his chest.
"You're staying awake," he said.
"Bossy."
"Yes."
"Ugly, too."
"I've been called worse."
"By people with eyes?"
His breath shook. Might've been a laugh. Might've been panic.
The heart rested on the floor between them.
Its cracked casing began to unfold.
Samuel raised his pistol.
Nora caught his sleeve. "Wait."
"I don't like the way it's opening."
"Neither do I."
The inner plates spread like metal petals. A pale blue beam rose from the core, struck the far wall.
A picture appeared.
Not a map. Not a warning.
A recording.
The image showed a white chamber Nora had never seen and knew at once.
A woman in a dark coat stood beside a glass tank. Her face was younger, but Nora recognized the sharp mouth, the silver-blond hair.
Evelyn Crowe.
Behind the glass, a baby lay curled inside a nest of copper rings.
A newborn girl.
A blue gear mark glowed beneath the infant's skin.
Nora stopped breathing.
The recording crackled. Evelyn leaned close to the glass, placed two fingers against it.
"Subject Venn is stable," she said. "The living key has accepted the heart."
Samuel went still beside Nora.
On the wall, baby Nora opened her eyes, and they