Dwight Wilson
Patricia Merrick, also known as Mlle. Mystera
Dr. Paul Cornelius
Horace Merrick
Mattie (as Gertrude W. Hoffman)
Chief of Detectives John F. O'Hara
Joe Valerie
Mrs. Marble
Police Car Driver (uncredited)
Paddywagon Cop (uncredited)
Detective Schultz (uncredited)
Detective Brady (uncredited)
Police Desk Sergeant Hamilton (uncredited)
Police Radio Announcer (voice) (uncredited)
Policeman in Car (uncredited)
Screenplay
Cinematography
Settings
Editor
Settings
Sound Recordist
Camera Operator
Music Director
Assistant Director
Production Assistant
Assistant Camera
Production Executive
Screenplay
Director
Story
Screenplay
