Something is wrong with Elena Vale. It starts with a whisper in her mind telling her to pick up a knife, to follow a man. She tries to resist, but the commands overwhelm her, and when she wakes up after a blackout, there's blood on her hands and no memory of what she's done. Haunted by fragmented memories and pursued by the very people who programmed her, Elena discovers she's part of a secret black-ops experiment designed to create a mind-controlled assassin. The more she uncovers, the clearer it becomes: She was never meant to survive this. Now, Elena must fight for control of her own mind, unravel the conspiracy, and stop the next target—before the voice inside makes her kill again.