The silver waterfall crashed against the basalt floor, sending a scalding mist of heavy liquid through the cavern. Marcus scrambled backward on his knees, shielding the child with his body as the tide of mercury rushed forward like living mercury-tinged lava. Where the metallic stream touched the spilled crimson fluid, the floor hissed violently, boiling into clouds of thick, sulfurous steam that blinded his vision.

Through the white haze, Elena moved without friction, stepping over the rising liquid as if it were harmless water. «You think destroying the vessel alters the code?» her voice boomed, rattling the fillings in Marcus’s teeth. «The sequence is already executing.»

From the edge of the control terminal, a ragged gasp tore through the thunder of the falling sphere. Vance hauled himself upright using a jagged piece of frame, his chest a maze of black veins crawling beneath torn fabric. In his hand, he held a severed bundle of the pedestal’s glowing blue fiber-optic cables, their exposed ends spitting blinding white arcs into the dark.

«Marcus!» Vance screamed, his voice cracking against the roar. «The inscription—look at the date!»

Marcus’s head snapped toward the carved warning on the pedestal. Beneath the crude letters—DO NOT TRUST THE CHILD—a timestamp flickered into view as the blue gel washed across the rock: 03:42:19 — THREE HOURS FROM NOW.

The realization struck Marcus like a physical blow. The warning wasn’t a record of his forgotten past; it was a broadcast from a future that hadn’t happened yet.

He looked down at his chest. The mirrored eyes of the infant weren’t reflecting a cylinder against his throat anymore. They showed a scene of absolute devastation—the monolith collapsed into the sea, the sky painted in burning violet, and Marcus himself standing atop the ruins, his hands covered in the same liquid mercury filling the cavern.

A sudden, jarring impact slammed into Marcus’s back. A tendril of silver fluid shot up from the floor, wrapping tightly around his waist and hoisting him off his feet. The pressure surged, ribs popping beneath the force, dragging him toward the falling column of metal.

«Release her,» Elena demanded, her hollow eyes inches from his face. She didn’t reach for the child; she reached directly for the sliced flesh of Marcus’s forearm, her fingers sinking straight into his silver-bleeding wound.

Agony tore through Marcus’s nervous system. His vision turned white, all sound collapsing into a single, high-pitched ringing. The child in his arm let out another melodic laugh, but this time, the sound didn’t hurt—it dissolved the silver tendril binding his waist.

Marcus plunged downward, crashing onto the inclined base of the central pedestal. He slid down the wet stone, clutching the baby tight as the crimson fluid on the floor began to pull into a violent, spinning whirlpool right beneath the suspended sphere.

The floating human silhouettes inside the mercury began to scream—a chorus of thousands of overlaid voices echoing out from the fluid. One by one, their bodies fractured into brilliant dust, sucked down into the center of the crimson vortex.

«It’s not a kill-switch!» Vance shouted, stumbling toward the vortex with the sparking cable bundle held high. He plunged the live wires directly into the center of the crimson pool. «It’s an engine!»

A blinding flash of arc-light illuminated every corner of the cavern. The shockwave blew Elena off her feet, hurling her dry, immaculate form against the far basalt wall. The massive mercury sphere collapsed completely, tons of liquid metal cascading down in a tidal wave that threatened to bury them all.

Marcus threw himself into the narrow recess beneath the pedestal just as the silver deluge swept over them. The heavy fluid roared overhead, blocking out all light, sealing them inside a small, airtight pocket of rock.

In the total darkness, the only source of light was the child’s face.

Her skin was glowing with a soft, iridescent crimson. The mirrored finish of her eyes faded, returning to a deep, terrifyingly intelligent hazel. She reached up, touching Marcus’s cheek with a tiny, ice-cold hand.

Where her skin met his, the searing pain in his forearm ceased instantly. The silver blood stopped flowing, the metallic wound closing into a clean, pale scar.

«Thank you, Marcus,» a voice said.

It didn’t come from the bone structure of his skull, nor did it come from the air. It was a soft, spoken whisper coming directly from the lips of the infant in his arms.

Before Marcus could draw breath to scream, the stone behind his back gave way. The floor dropped out from beneath them, plunging Marcus, the child, and the broken remains of the pedestal into a roaring underground river of freezing subterranean water.

The current seized them instantly, dragging Marcus down into the absolute blackness of the deep trench. He fought against the weight of the water, kicking toward what he hoped was the surface, his lungs burning for air.

His head broke the water in a vast, silent chamber illuminated only by a single, distant spotlight.

He gasped for air, dragging the child up onto a low concrete ramp. The water here was still, smelling strongly of chlorine and old paper.

Beside him on the ramp lay Vance, unconscious, his breath coming in shallow, wet rattles. The black veins on his chest had receded, leaving behind pale, dead skin where the wounds had been.

Marcus pushed himself up, wiping the wet hair from his face, and looked around the chamber.

It wasn’t a cavern. It was a pristine, subterranean archive lined with endless rows of metallic filing cabinets and glass isolation chambers.

And standing in the center of the room, under the single beam of light, was a man sitting at a metal desk, quietly typing on an old mechanical typewriter.

The man stopped typing, pulled the sheet of paper from the carriage, and turned around in his chair.

Marcus froze.

The man had Marcus’s face—wrinkled, aged by decades, with a thick white beard and a long scar running across his throat.

«You’re early,» the old man said, his voice dry and papery as he held out the fresh page. «She wasn’t supposed to speak until you reached the third level.»