The clatter of the mechanical relays stopped dead.

The hundreds of glowing vacuum tubes shifted from a calm amber to a violent, pulsing crimson.

BIOMETRIC CONVERGENCE CONFIRMED, a synthetic, mechanical voice crackled through the antique PA horns mounted in the vault ceiling.

WARD PROTOCOL: ACCEPTED.

MORETTI PROTOCOL: ACCEPTED.

MASTER SCRAM SEQUENCE INITIATED.

Arthur lunged forward, screaming an incoherent curse, raising his heavy cane to strike Emma down himself, but Marco broke from cover, tackling the old patriarch to the floor in a flurry of limbs and shattered wood.

Suddenly, the floor beneath their feet didn’t just vibrate—it began to descend.

The entire circular console platform, carrying Vincent, Emma, Arthur, and Marco, detached from the upper foundry foundations, dropping into a deep, subterranean vertical silo that plunged into the earth beneath Lake Michigan.

Above them, through the receding square opening of the blast doors, Emma looked up and saw that the catwalks were collapsing into the flames of the ruptured dynamos.

Down, down, down the iron elevator platform plummeted, descending hundreds of feet into a forgotten world of subterranean darkness.

When the platform finally struck the bottom with a bone-jarring metallic crash, the emergency lights of the deep silo flickered on, bathing the cavern in an eerie, pale green glow.

Emma scrambled to her feet, her weapon drawn, Vincent rising beside her, his hand wrapped around hers, blood dripping from their joined palms onto the cold steel deck.

They weren’t in a control room.

They were standing in an enormous, underground subterranean dry dock excavated beneath the bed of Lake Michigan.

And resting before them in the subterranean water, completely intact, bearing the markings of the United States Navy from 1972, was a massive, black-hulled nuclear-class submarine, its boarding ramps lowered, steam hissing from its cooling vents.

Standing at the top of the gangway, surrounded by two dozen silent, heavily armed figures in pristine naval dress uniforms, was a woman whose face made Vincent’s breath catch in his throat, his hand trembling as he held Emma’s.

She was an older woman, elegant, carrying the unmistakable high cheekbones and striking dark eyes of the Moretti bloodline—a woman who wore the twin signet ring of the Sovereign on her right hand.

“Welcome home, Vincent,” the woman said, her voice smooth, steady, and chillingly familiar.

“Arthur was merely the decoy.

I have waited fifty years for you to bring me the Ward bloodline.”

Emma felt Vincent’s grip tighten to the point of breaking as he stared at the woman on the gangway.