Having achieved celebrity status with his last case, forensic psychiatrist Frank Clevenger is tapped by the FBI to catch an elusive murderer known as the Highway Killer who has left twelve bodies strewn across twelve states. But the Highway Killer isn't just a serial killer - he's a psychiatrist whose brilliance as a doctor is matched only by his precision as a murderer. When he writes to a national newspaper challenging Clevenger to cure him through an exchange of open letters a gripping public therapy unfolds. With the Highway Killer's brutality reaching new heights as he confronts his mind's darkest demons, will Clevenger exorcise those demons before they spin completely out of control?