A teenage girl with a bloody past investigates a suspicious rehab center in the New York Times–bestselling author's dark psychological thriller.

Morgan's father, a convicted serial killer, raised her to follow in his sadistic footsteps. But now she's determined to protect her freedom and not get locked away. So, despite ongoing temptation and a bloody past, Morgan swears off murder.

To tame her sociopathic instincts, Morgan cons her way into working with security consultants Jenna Galloway and Andre Stone. Suddenly, she's going undercover to infiltrate a treatment center for troubled teens, investigating the suicide of a fourteen-year-old girl.

It isn't long before Morgan realizes the patients are really in charge?and that some of their psychopathic tendencies rival her own. Even if she can discover the truth behind the girl's death and escape alive, what?or who?might be waiting for her on the outside?