A lawman confronts his past and a dangerous predator A taunting text from a serial killer gives FBI agent Nolan only minutes to save the next victim. Former cop Adalyn – and Nolan's ex-girlfriend – receives the same message. That's just the beginning of a cunningly orchestrated plan that unearths a shocking secret about Nolan. As he struggles to come to terms with his past and protect Adalyn, a madman's end game could bury them both.