Calificación
Reparto

Lon Chaney Jr.
Alex Gregor, aka Gregor the Great

Evelyn Ankers
Maura Daniel

Elena Verdugo
Nina Coudreau

Martin Kosleck
Rudi

Tala Birell
Mme. Monet

Milburn Stone
George Keene

Douglass Dumbrille
Inspector Brant

Arthur Hohl
The Drunk in the Audience

Dennis Moore
Radio Announcer (uncredited)

Leyland Hodgson
Doctor in audience (uncredited)