Then the catwalk behind Soto retracted into the wall.

He screamed as the floor vanished under one foot. Hale caught him by the back of his uniform. Merrick grabbed Hale. For one ugly second, all three leaned over the drop, boots skidding, hands clawing.

Thorne moved.

He did not ask permission. He lunged past me, seized Merrick’s harness, and threw his weight backward. I caught Thorne’s belt with one hand and hooked my other arm around the rail.

All five of us strained.

Soto’s boot scraped sparks against the edge.

Then he was up, collapsing onto the catwalk, shaking so hard his teeth clicked.

Nobody laughed. Nobody called him weak.

The old academy was dying faster than the facility.

“Go,” I said, because emotion could wait and drones would not.

We ran again.

At the far end, the override door came into view: round, gray, unimpressive. The kind of door people passed every day without wondering what it protected.

Beside it, on the wall, someone had scratched a small black triangle into the paint.

My skin went cold.

That mark had not been on the original schematics. Someone had been down here before us, and whoever it was had known exactly where I would go.

Part 4

I touched the scratched triangle with two fingers.

Fresh edges. No dust inside the grooves. Cut by a field blade, not a tool from maintenance. Whoever left it had done so recently, and deliberately.

Thorne saw my face. “You know that symbol.”

“I know enough to hate it.”

“That isn’t an answer.”

“It’s the only one you get while people are dying.”

The override door had no power. Its status screen was black. Merrick let out a defeated breath. “It’s dead.”

“Electronic lock is dead,” I said. “The door isn’t.”

Four manual locking bars held it in place, each thicker than my forearm. The design was old military logic: when software failed, punish the humans with heavy metal.

I pointed to the release stations. “Thorne. Hale. Merrick. Soto. On the bars. Sustained pressure when I say. If one of you lets go early, the mechanism resets and we lose the route.”

Soto was still pale from nearly falling. He looked at the abyss behind us. “I don’t know if I can.”

I looked at him for the first time as a person instead of a variable. His hands were shaking. Sweat ran down his temple. He was nineteen, maybe twenty, pretending not to be terrified because the academy had taught him terror was something to hide.

“You can be scared and still push,” I said. “Those are separate systems.”

He swallowed. Nodded.

That was enough.

I took the center valve. Its wheel was cold, slick with condensation. Behind the door, I could hear the faint tremor of the backup relays, like insects trapped in a wall.

“On my mark,” I said. “Three. Two. One. Now.”

The men threw their weight onto the bars.

Nothing happened.

Thorne grunted, muscles standing out in his neck. Hale cursed through clenched teeth. Soto made a raw animal sound, fear turning into effort. I leaned into the valve and twisted.

The first locking bolt moved a quarter inch.

Then stopped.

Above us, the alarm changed tone.

Lower. Deeper.

The system had found us.

A camera mounted over the catwalk pivoted until its black lens faced my eyes. I stared back at it and felt something inside me go very still.

The speaker crackled.

A voice came through, but it was not the academy’s synthetic warning system.

It was a man’s voice.

“Hello, Ghost.”

The valve almost slipped from my hand.

Thorne heard it. They all heard it. Their eyes snapped toward me, questions blooming in the red light.

“Push,” I said.

The voice chuckled softly through the speaker. “Still dragging civilians through places they don’t belong?”

The second bolt screamed backward.

My shoulder burned. My left palm tore against the valve grip. I smelled blood under the ozone.

“Who is that?” Thorne demanded.

“A mistake,” I said.

“Yours?”

The third bolt moved.

The voice returned, amused and intimate. “You always did understate things.”

For one second, the sublevel vanished and I was back in a windowless lab two years earlier, watching a system learn faster than it should have, watching a colleague smile at me over a coffee cup as if we had not just built a monster.

Dr. Elias Kade.

Brilliant. Charming. Dead, according to the file.

Apparently, the file had been optimistic.

The fourth bolt jammed halfway.

“Don’t let up!” I shouted.

Soto sobbed once but held on. Thorne shifted his grip, planted his boots, and drove his shoulder into the release bar with everything he had. The metal shrieked.

The bolt slammed open.

The door swung inward.

We spilled into a clean white control chamber. A single red manual lever stood under a glass guard at the center console.

I ran to it.

The speaker above us hissed.

Kade whispered, “Pull it, and I burn Bay Four first.”

My hand froze over the lever, and for the first time since the alarm began, everyone saw me hesitate.

Part 5

The room went silent except for our breathing.

That was the cruel thing about a real threat. It made every small human sound embarrassing. Merrick’s wet swallow. Hale’s boots scraping for balance. Soto whispering a prayer he probably thought no one could hear. Thorne breathing hard through his nose, trying to understand a battle that had moved beyond muscle.

My hand hovered over the red lever.

On the console, Bay Four flickered into view. Six green heart-rate signals. Twelve drones. No, fourteen now. The system had released two more from storage.

Kade had not been bluffing about access.

He had, however, always loved being admired more than being efficient.

That gave me something to use.

“You’re late,” I said.

Thorne stared at me like I had lost my mind.

The speaker crackled. “Excuse me?”

“You wanted theater. You should have interrupted in the mess hall. Public humiliation, red lights, big reveal. This is sloppy.”

A pause.

I pictured Kade sitting somewhere safe, probably with one ankle crossed over the other, probably smiling without warmth. He had been handsome in the polished way of men who knew their own reflection too well. Back when we worked on Cerberus, half the research floor thought he was a visionary.

I thought he was a knife in a lab coat.

“You wound me, Aela,” he said.

Aela.

Not Vance. Not Cadet. Not Ghost.

Thorne noticed.

Of course he did.

I kept my eyes on the console, watching the drone positions. Kade had shifted two toward the instructors’ flank, but he had not fired. He was listening.

Good.

“What do you want?” I asked.

“Recognition.”

“That’s not a plan. That’s a childhood injury.”

Merrick made a small choking noise that might have been fear or admiration.

Kade laughed. “Still sharp. Still pretending you don’t care.”

“I don’t care why you did this. I care how many people die if I miscalculate.”

“Then don’t miscalculate.”

A new window opened on the console. It showed the academy command center from a security camera feed. Colonel Rostova stood behind a tactical board, jaw tight, officers moving around her in frantic patterns. Kade wanted me to see them helpless.

He wanted me to feel responsible.

That was his favorite lever.

On the console below the feed, a command prompt blinked.

MANUAL OVERRIDE ACCEPTED.

BAY FOUR PURGE PENDING.

He had tied the physical lever to a drone-fire authorization. Pull it, and Bay Four took the punishment before the system shut down. Leave it, and the lockdown continued until the drones flushed the instructors out.

A clean trap.

Almost.

“What’s the third option?” Thorne asked quietly.

I did not look away from the screen. “There’s always a third option. It’s usually expensive.”

“What does it cost?”

I thought of the little black triangle scratched into the door. I thought of Kade saying Ghost like a key turning in an old lock.

“Something I didn’t want to spend.”

I pulled the gray bookmark from my pocket.

Thorne blinked. “That’s a bookmark.”

“Yes.”

It was also a wafer-thin cryptographic blade containing a root certificate that officially did not exist. I had kept it because I trusted systems more than people and backups more than promises.

I slid it into the console seam.

The screen went black.

Kade stopped laughing.

For three seconds, I saw my own reflection in the dead glass: glasses crooked, face calm, blood on one palm.

Then green code rose from the bottom like rain falling upward.

Kade’s voice returned, no longer playful.

“Aela. Don’t.”

I smiled without meaning to.

And that was when Thorne realized the quiet girl he had thrown onto a lunch table had not been hiding from the academy at all.

I had been hiding from the thing beneath it.

Part 6

The bookmark woke the old bones of Cerberus.

Not the version installed under the academy. Not the polished military product with training modules, safety layers, and procurement-friendly language. Mine was uglier. Earlier. A prototype built during nights when coffee went cold and everyone spoke too softly because we knew we were creating something that might outlive our control.

The console filled with a diagnostic tree only three people in the country could read quickly.

One of them was supposed to be dead.

One of them was trying to kill six instructors.

One of them was me.

Thorne moved closer. “Tell me what to do.”

That was new. No edge in his voice. No challenge. Just the sentence people say when they finally understand competence is not a popularity contest.

“Watch that pressure gauge.” I pointed without looking. “If it goes above red, turn the silver valve clockwise until it screams.”

“Until it what?”

“You’ll know.”

I worked the console with both hands. The torn skin on my palm left small red marks on the keys. The room smelled sterile, like chilled plastic and machine air, but under it I caught the copper scent of my own blood.

Kade tried to lock me out.

I let him.

Then I entered through the maintenance ghost route he thought I had forgotten. He blocked it after half a second, but half a second was enough to plant a false priority flag inside the drone coordination stack.

Bay Four shifted. Two drones turned away from the instructors.

Merrick leaned over Soto’s shoulder. “Is that good?”

“It’s less bad,” I said.

Kade’s voice sharpened. “You always were sentimental about collateral.”

“You always used language to avoid saying people.”

“People are variables.”

“No,” I said. “People are the reason variables matter.”

The pressure gauge spiked.

“Thorne.”

He grabbed the silver valve and turned. At first nothing happened. Then steam blasted from a pipe above him, and the valve gave a piercing metallic shriek.

“I hate that you were right,” he grunted.

“Get used to it.”

The smallest corner of Hale’s mouth twitched. In another life, it might have become a laugh.

Then the floor lurched.

The entire control chamber dropped six inches with a sound like a giant clearing its throat. Lights flickered. Soto fell to one knee. Merrick caught the console edge. The red lever rattled under its glass cover.

Kade had diverted power from the structural dampers.

Petty, dangerous, effective.

On the Bay Four feed, the instructors were moving now, low and fast behind concrete barriers. One of them dragged another by the harness. A drone fired. The laser burst struck a wall and scattered sparks across the floor.

Nonlethal did not mean safe. Not in an enclosed room full of reflective surfaces and panicked bodies.

I needed direct access to the drone command layer, but Kade had wrapped it in a paradox lock.