Director/a
Robert F. Hill
DIRECTOR/A
Reparto (por orden de créditos)
Ralph Byrd
Dr. Jerry Sheehan
Herbert Rawlinson
Sir James Blake
Joan Barclay
Hope Mason
Lloyd Hughes
Dr. Marshall
Dickie Jones
Bobby Mason
Lucille Lund
Duchess [Chs. 1-6, 14]
Nick Stuart
Julot [Chs. 2-4, 9-10, 14]
Sam Flint
Chief Insp. Henderson
Gail Newbury
Mimi - Policewoman [Chs. 2-4, 9-11]
Jimmy Aubrey
The Hag
Theodore Lorch
Daggett - the Butler
George DeNormand
Pedro - Henchman [Chs. 1-7, 14]
Bob Terry
Peyton - Henchman
William Farrel
Count Basil Segaloff
Frank Wayne
Charles - the Footman
Dick Curtis
Nicky - Henchman
Victor Adamson
Newsboy (uncredited)
John Bagni
Cafe Waiter [Chs. 1-3, 10, 14] (uncredited)
Bruce Bennett
Adolph - Henchman with eyepatch (uncredited)
John Elliott
Landlord and League Representive [Chs. 11-13] (uncredited)
Henry Hall
Scotland Yard Detective [Chs. 5, 7, 11-13] (uncredited)
John Harron
Sgt. Dickens [Chs. 6, 8, 11-12] (uncredited)
Eric Mayne
Peace Delegate [Chs. 1 & 11] (uncredited)
George Morrell
Adm. Blandon [Chs. 1 & 11] (uncredited)
Francis Walker
Henchman (uncredited)