Kenneth Bianchi is arrested in Washington State, suspected of being the Hillside Strangler. Is his cousin his murder partner? A young girl disappears in Huntington Beach, the victim of a serial killer who appears on the TV show The Dating Game.

Kenneth Bianchi claims he has multiple personalities, and that "Steve" is the Hillside Strangler who kills with a partner. The Dating Game Killer is arrested but proving his guilt will not be easy. Detective Souza begins his pursuit of the Freeway Killer.

While Detective Souza chases the Freeway Killer, he consults with one of the Tool Box Killers. To avoid the death penalty, the Hillside Strangler agrees to testify against his murder partner, Angelo Buono. A new serial killer strikes on the Sunset Strip.