Keith R Ablow

A psychologist's own deranged behavior helps him track down a killer for the police. Frank Clevenger, who goes in for sadomasochism, understands better than most the mentality of a man who cuts off a woman's breasts after killing her.

Enlisted by the FBI, forensic psychiatrist Frank Clevenger is assigned the case of the elusive Highway Killer, who engages in a confrontational letter campaign with Clevenger through a national newspaper.