Read Chapter 32: The Choice

The Heart’s pulse staggered beneath Mack’s palm. Not a steady rhythm anymore—a skip, a stutter, like a motor running on bad fuel. Above them, the ceiling flickered, and somewhere in the distance, the hum of the city’s power grid hiccuped into silence.

The Warden didn’t seem to notice. He stood at the Heart’s base, one hand buried wrist-deep in the pulsating tissue of the mechanism, his coat rippling with shadows that crawled up his arm like veins. His face was a mask of ecstatic concentration, and when he spoke, his voice came from everywhere at once.

“You see, Riley? You see what this can do? Every dollar that changes hands, every subway car that runs, every light that flickers on in a million apartments—it all flows through here. And now it flows through *me*.”

The floor shuddered. Somewhere above, a transformer blew. Mack could feel it in his teeth.

Elena moved to the left, pulling her pistol from its holster, but the Warden barely glanced at her. “You can’t shoot what you can’t stop. I’m not a man anymore, Elena. I’m the system.”

Mack’s eyes raced across the chamber. The Heart wasn’t just a machine—it was a network of conduits, valves, returns. He’d seen it now, felt it in his goddamn bones. And he knew pipes. He knew pressure and flow and what happened when you forced a river back up its own source.

“Elena,” he said, low. “Keep him talking.”

She didn’t question him. She stepped forward, weapon raised but steady, her voice carrying a calm she couldn’t possibly feel. “You knew my mentor. You knew Marcus Senior. You killed him and called it maintenance.”

The Warden’s smile flickered, just for a second. “He got in the way of necessary work.”

“He was trying to stop you.”

“Then he should have tried harder.”

The shadows around the Warden swelled, lashing out toward Elena like whips of black smoke. She dodged, firing twice, and the shots passed straight through him, punching holes in the dark that closed as quickly as they opened.

Mack dropped to his knees at the Heart’s base. The housing was torn open where the vault had sealed around him, and he could see the raw machinery—tendons of copper and glass, sinews of wire and something that pulsed like flesh. The fifth fragment was embedded in the central hub, glowing soft blue-green. The other four sat heavy in his coat pocket, burning against his ribs.

He knew the schematic now. He’d been inside it, *become* it for a moment. The Heart drew from the city—every transaction, every movement, every spark of commerce—and channeled that energy into the network below. But the flow could be reversed. Push it back instead of letting it pull. Send everything the Heart had absorbed down the wrong pipe, back through the conductor.

Back through the Warden.

“I need the fragments,” Mack muttered to himself. He pulled them out, four cold shards of steel and glass, and there was a moment of pure terror as he realized he had no idea how to fit them into the mass of living mechanism. The Heart hummed, sensing him, and the housing around the fifth fragment began to shift, reshaping itself like water responding to a whisper.

“Hold him off!” Mack yelled.

Vinny burst from behind a pillar of conduit, his melted crowbar swinging with all the fury of a man who’d been double-crossed one too many times. The Warden turned, contemptuous, and raised a hand of shadow, but Vinny was faster than he looked—the crowbar caught the Warden across the shoulder and the impact sent a shockwave through the chamber, a sound like a punch to raw meat.

The Warden snarled. The shadows around him flickered, unstable for just a moment.

Mack slammed the four fragments into the Heart’s housing. One. Two. Three. Four. Each one seated with a click that felt like a key turning in a lock. The Heart’s pulse quickened, then steadied, then *surged*.

“Riley, what are you doing?” The Warden’s voice pitched higher, an edge of something that sounded almost like fear.

Mack grabbed a bundle of copper tubing and twisted it the wrong way. It should have snapped. Instead, it groaned, the metal contorting like Silly Putty, redirecting the flow. He yanked a lever that was never meant to be pulled, forced a valve that shouldn’t have moved, and felt the world tilt as the Heart’s entire gravitational center shifted.

The tide turned.

The Warden screamed.

It was a sound unlike anything Mack had heard before—a shriek that came from the shadows themselves, from every dark corner of the network the Warden had tapped into. The lights above them stuttered, then blazed into blinding white as the Heart’s energy reversed, flooding back through the conductor’s body.

“No—*no*—I control it—I am the——”

The shadows began to dissolve. Not all at once, but in shreds, like smoke caught in a hurricane. The Warden’s arm came away from the Heart trailing wisps of black, and for the first time, Mack saw skin underneath. Pale, human skin.

Elena lowered her gun. Vinny stared, crowbar dripping with shadow-residue, frozen mid-swing.

The Warden looked down at his own hands as if he’d never seen them before. The black was peeling away, revealing bone-thin fingers, knuckles that looked like they hadn’t seen sun in decades. He took one step back from the Heart, then another, and the chamber shook with each staggering footfall.

Mack stood at the Heart’s base, still holding the twisted tube, his knuckles white. The feedback loop was working. The Warden’s form was unraveling like a rope cut loose at both ends.

But underneath the dissolving dark, there was something that looked almost human in a state of shock. And it was looking at Mack with wide, desperate eyes.

The lights above the chamber flickered once—then held steady.