Dennis O'Brien
'Professor' Fredrick Simpson Schicka
Inspector Bruger
Irma Rand
Sylvia Rand
Gail Chase
Ed Gannon
Steve Belzig alias Vic Lundy
Bill Rafferty
Eddie Paige
Harry Barton
Sparring Partner
Screenplay
Director
Original Story
Makeup Artist
Director of Photography
Editor
Producer
Art Direction
Property Master
Construction Foreman
Wardrobe Supervisor
Sound
