Detective Erin Donovan expects life to settle down after the arrest and conviction of a serial rapist who terrorized her college town last summer. Then two young women are brutally slain and the murders bear all the hallmarks of the campus rapist. Did Erin arrest the wrong man? Her job is at stake and tensions are high. Just when it looks like things can't get worse, the FBI’s Behavioral Analysis Unit sends a profiler to assist the investigation—in the form of a man Erin has never been able to forget. Three years ago, former Marine scout sniper Darsh Singh’s feelings for Erin had him breaking all his rules. Now his only interest in the former NYPD detective is figuring out if she screwed up an investigation and helped send an innocent man to prison. Being forced to work together rekindles their attraction, and as Darsh and Erin fall for each other, the predator fixates on the female detective hunting him. Can they identify the killer before he makes Erin his final victim?