Onder andere met: Sylvia Sidney (Mrs. Verloc (as Sylvia Sydney)), Oskar Homolka (Karl Anton Verloc (Bijou Cinema owner) (as Oscar Homolka)), John Loder (Det. Sgt. Ted Spencer, Scotland Yard), Desmond Tester (Steve Verloc (Mrs. Verloc`s brother)), Joyce Barbour (Renee), Matthew Boulton (Scotland Yard Supt. Talbot), S.J. Warmington (Insp. Hollingshead, Scotland Yard), William Dewhurst (The Professor (A.F. Chatman Bird Shop owner/Bomb maker))