Dr. Paul Rigas
Dan McCormick
June Lawrence
Mark Adams
Dr. John Lawrence
District Attorney Ralph B. Stanley (as William Davidson)
Detective Sergeant Regan
Nurse (as Connie Bergen)
Doctor
Wong
Dr. Bruno
Police Detective
Medical Examiner
Alienist #2 (credit only)
Mrs. Frank Davis (uncredited)
Charlie - Prison Guard (uncredited)
Radio Announcer (uncredited)
Corky the Dog (uncredited)
Jury Foreman (uncredited)
Assistant District Attorney (uncredited)
Police Radio Announcer (uncredited)
Reporter (uncredited)
Mike - Dynamo Operator (uncredited)
Prison Warden Harris (uncredited)
Judge (uncredited)
Police Detective (uncredited)
Prison Guard (uncredited)
Defense Attorney (uncredited)
Frank Davis (uncredited)
Prison Chaplain (uncredited)
Hay Wagon Passenger (uncredited)
Dynamo Operator #2 (uncredited)