Lon Chaney Jr.

~ as ~

Alex Gregor, aka Gregor the Great

Evelyn Ankers

~ as ~

Maura Daniel

Elena Verdugo

~ as ~

Nina Coudreau

Martin Kosleck

~ as ~

Rudi

Tala Birell

~ as ~

Mme. Monet

Milburn Stone

~ as ~

George Keene

Douglass Dumbrille

~ as ~

Inspector Brant

Arthur Hohl

~ as ~

The Drunk in the Audience

Dennis Moore

~ as ~

Radio Announcer (uncredited)

Leyland Hodgson

~ as ~

Doctor in audience (uncredited)