Who Done It?
Hugo Dill
Frankie Mayne
Zacco
Det. Inp. Hancock
Barakov
Sir Walter
Professor Stumpf
Gruber
Himself
Raymond Courtney
Frankie's Agent
PC Roberts
PC Coleman
Scientist
The Actress
Disc Jockey
Themselves
Fabian
Detective at Uralian Legation (uncredited)
Man Entering Radio Show (uncredited)
