A crash on a North Dakota highway leaves one passenger dead but the driver unscathed. When investigators see that the victim has stab wounds, they know there was foul play. Detectives interrogate the driver and quickly realize he's a psychopath.

After his conviction for the brutal slaying of his wife, a Florida inmate lays claim to another unsolved murder 17 years prior, revealing that he's a manipulative psychopath with a history of violence and an unquenchable thirst for revenge.