Basil Rathbone
Sir Joel Cadman
Herbert Rudley
Dr. Gordon Ramsay
Patricia Blair
Laurie Munroe
Akim Tamiroff
Odo the Gypsy
Phyllis Stanley
Daphne
Lon Chaney Jr.
Dr. Munroe, aka Mungo
Bela Lugosi
Casimir
John Carradine
Bohemund
George Sawaya
Sailor-Subject
Tor Johnson
Mr. Curry
Sally Yarnell
Female Subject
Peter Gordon
Sgt. Steele
Claire Carleton
Carmona Daly
Clive Morgan
Roundsman Blevins (uncredited)
Louanna Gardner
Angelina Cadman
Aubrey Schenck
Prison Coroner's Clerk (uncredited)
John Sheffield
Det. Redford (uncredited)