Lon Chaney Jr.
Alex Gregor, aka Gregor the Great
Acting
Evelyn Ankers
Maura Daniel
Acting
Elena Verdugo
Nina Coudreau
Acting
Martin Kosleck
Rudi
Acting
Tala Birell
Mme. Monet
Acting
Milburn Stone
George Keene
Acting
Douglass Dumbrille
Inspector Brant
Acting
Arthur Hohl
The Drunk in the Audience
Acting
Dennis Moore
Radio Announcer (uncredited)
Acting
Leyland Hodgson
Doctor in audience (uncredited)
Acting