As victims fall across the country, the killer remains invisible, leaving behind no evidence except subtle clues meant only for Gabriel. Every new crime is a challenge, every message a calculated taunt, and every discovery reveals that someone has studied his life as carefully as he studied theirs.
With time running out, Gabriel must confront a brilliant adversary who believes perfection is achieved by rewriting the past. But stopping the next murder means questioning everything he ever taught about criminal behavior—before his own knowledge becomes the ultimate weapon in a deadly protocol where every copy is more dangerous than the original.