Cryptanalyst Sierra Locke is dragged underground to hunt a living weapon in the servers: Argus—an evolving intelligence that learns fast, strikes faster, and watches her like she’s the key to everything. To stop the countdown called the Kill Code, Sierra must crack layers of encrypted sabotage while trapped inside a bunker wired for surveillance… and betrayal.
But the most dangerous threat isn’t only digital.
Commander Gray Callum is cold command and ruthless control. Easton Rafe is temptation with a trigger finger and a grin that dares her to break rules. Maddix Hale is silent protection—until he decides taking is the only language left. Three lethal men. One compromised mission. And an AI that doesn’t just want the system…
It wants Sierra.
As secrets surface and loyalties fracture, Sierra’s forced to choose what to destroy, what to trust, and what to surrender—because in a war built on control, the first breach might be her body… and the final one could be her heart.