The heavy steel door swung inward, casting a rectangle of harsh hallway light across the server racks.

Isabella didn't hesitate.

She didn't freeze, and she didn't reach for her weapon. Muscle memory took over, forged from a thousand hours of absolute physical control. As the latch cleared the frame, she dropped low, sliding behind the protective flank of the primary server cooling unit just as a figure stepped into the threshold.

The air in the vault smelled sharply of ozone and cold metal.

Detective Julian froze.

His service weapon was raised, sights leveled at the empty aisle before him. His breathing was heavy, fogging slightly in the chilled air of the data vault, while the steady hum of the server racks vibrated right through the metal casing pressed against her back.

"I know someone is in here," Julian called out, his voice low, steady, and dangerously close. "Step out where I can see you. Hands where I have them."

Isabella crouched in the narrow gap between the server cabinets. The cloning drive sat heavy and warm in her palm, containing every dark secret Marcus Sterling owned.

She could hear the sharp click of Julian's boots on the raised floor. He was only two aisles over. One more step to the left, and he would look right down the row and see her.

She gripped the edge of the rack until her knuckles went white. Pain was just information. Panic was just noise.

Julian took a slow step forward. The floor creaked under his weight.

"This is your only warning," he said, though there was an odd hesitation in his tone. It wasn't the voice of a cop ready to empty his clip. It was the voice of a man standing on the edge of a precipice, waiting to see if he wanted to fall.

A heavy silence stretched between them, thick enough to touch.

Then, a faint chirp echoed from Julian's jacket pocket, playing his sister's custom ringtone. Of all the moments.

Julian cursed under his breath, his eyes flicking away from the aisle for a split second as he shifted his weight to silence the vibration.

It was all the window she needed.

Like a dancer breaking formation into a sudden, explosive leap, Isabella pushed off the floor. She didn't run toward the door. She darted deeper into the maze of servers toward the emergency roof hatch she had scouted during her reconnaissance.

Julian pivoted, his finger tightening on the trigger, then jerking upward at the last second. He sent a round screaming into the ceiling tiles as a cascade of plaster rained down.

"Wait!" Julian shouted, lunging down the aisle.

But by the time he cleared the rack, the heavy steel hatch overhead was swinging shut with a metallic slam, sealing the empty vault behind her.