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
Director
Screenplay
Producer
Art Direction
Original Story
Editor
Construction Foreman
Wardrobe Supervisor
Property Master
Makeup Artist
Associate Producer
Music
