The Incredible 2-Headed Transplant 1971

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.

Cast:

Bruce Dern
Roger 

Pat Priest
Linda 

Casey Kasem
Ken 

Albert Cole
Cass 

Berry Kroeger
Max 

Larry Vincent
Andrew