An Admiral Saw a Faded Tattoo on a Forgotten Father—Then Saluted the Officer the Navy Had Declared Dead 24 Years Earlier / Chapter 42 / 61

Chapter 42 - The Descent into the Unseen

The pressurized hatch of the *Proteus-IV* slammed shut with a heavy, hydraulic thud, sealing Michael Mercer inside a sphere of reinforced titanium and acrylic glass no larger than a pilot's cockpit. Outside, floodlights cut through the churning surface water as the crane winched the capsule over the side and released it into the freezing jaws of the North Atlantic.

Gravity took over. The sub plunged into the dark.

Inside, the only sounds were the hiss of the carbon-dioxide scrubbers, the rhythmic throb of the oxygen injector, and the rapid, shallow beating of Michael’s heart. On his dashboard, the digital depth gauge ticked upward at a dizzying pace: *1,000 feet... 3,500 feet... 7,000 feet...*

"Michael, telemetry is holding," Vance’s voice crackled through the ultra-low-frequency hydro-acoustic comms, heavily modulated by distance and water density. "Surface strike group has gone to Condition Zebra. Those eighty acoustic contacts are hovering at five thousand feet, holding a defensive dome. They’re letting you pass, Michael. Why the hell are they letting you pass?"

"Because Lucas told them his father was coming," Michael murmured, his fingers dancing across the directional thruster toggles.

The bathyscaphe plunged through the twilight zone, past the abyssal plains where no sunlight had penetrated since the dawn of Earth. At fifteen thousand feet, the exterior hull groaned—a long, metallic wail of agony as millions of tons of pressure bore down on the sphere. Condensation trickled down the interior bulkheads, freezing into frost near the foot pedals.

Then, the exterior temperature gauge did something impossible.

Instead of dropping toward zero Celsius, the temperature began to rise. *4°C... 12°C... 26°C...*

"Vance, are you seeing this thermal plume?" Michael called out.

Static roared in response. The hydrophone crackled with rhythmic, rhythmic pulses—not the mechanical ping of sonar, but the deep, resonant heartbeat of an engine the size of a mountain.

Through the viewport, Michael illuminated the external xenon floodlights. The beams sliced through the silt, and Michael gasped.

He had expected to find the pulverized scraps of the *Leviathan* research base or the rusted skeleton of his old submarine, the *USS Acheron*. Instead, rising from the floor of the trench was a colossal wall of monolithic, iridescent black stone, perfectly vertical, stretching for miles in either direction. It was carved with impossibly intricate channels through which streams of superheated, glowing mineral-rich water flowed like burning veins.

And in the center of the wall, carved directly into the seabed shelf two miles below any submarine's survivable depth, was a colossal circular airlock.

The blast doors had cracked open just five meters.

Resting inside that crack, crushed and half-buried under volcanic shale, was an emergency survival pod from the *Leviathan*. Its transponder was blinking amber.