Darlene grabbed his shoulder. "Elliot! The building is shaking!"

[MPC/GHOST] ERROR: HUMANITY NOT FOUND IN ROUTING TABLE. PACKET DROPPED.

The air in the server sub-basement of the New York Federal Reserve didn't circulate. It congealed. Elliot Alderson felt it stick to his lungs as he stared at the brick of blinking lights bolted to the wall: the Multi-Protocol Controller.

"You don't have to choose," he whispered to the machine. "Just forget. Purge the buffer. Clear the stack. If you don't remember who gave the last order, there is no last order."

Elliot let out a breath he'd been holding for three seasons.

He snipped the cable with his teeth. Then he spliced it directly into the M.P.C.'s diagnostic port. A shower of sparks. A hiss of ozone.

Darlene stared. "Did you just… factory reset the entire federal reserve's emergency network by holding up a photo ?"

Darlene was behind him, jamming a secondary feed into a UPS relay. "Sixty seconds until Stage 2 propagates to the HSM clusters," she whispered. Her voice was too loud. In this vault of cold steel, any sound felt like a betrayal.