

“Two heads crafted on the body of a giant... The most fearsome living force ever created by man.”
Dr. Roger Girard is a rich scientist conducting experiments on head transplantation. His caretaker has a son, Danny, who, although fully grown, has the mind of child. One day an escaped psycho-killer invades Girard's home, killing Danny's father before being gunned down himself. With the maniac dying and Danny deeply unsettled by his father's death, Dr. Girard decides to take the final step and transplant the killer's head onto Danny's body.
Jack Lester
Sheriff

Jerry Patterson
Deputy

Darlene Duralia
Miss Pierce

Gary Kent
Motorcyclist

Mary Ellen Clawsen
Motorcyclist

John Bloom
Danny

Raymond Thorne
Motorcyclist (as Ray Thorn)

Gary Kent
Motorcyclist (as Donald Brody)

Bill Collins
Highway Patrolman

Jack English
Highway Patrolman

Robert Miller
Station Attendant

Carolyn Gilbert
Nurse