Full Credits
12 members

Boris Karloff
Gen. Nikolas Pherides

Ellen Drew
Thea

Marc Cramer
Oliver Davis

Katherine Emery
Mary St. Aubyn

Helene Thimig
Madame Kyra

Alan Napier
St. Aubyn

Jason Robards Sr.
Albrecht

Ernst Deutsch
Dr. Drossos

Skelton Knaggs
Andrew Robbins (uncredited)
Sherry Hall
Col. Kobestes (uncredited)
Erick Hanson
Officer (uncredited)

Rose Hobart
Mary St. Aubyn (in long shot; uncredited)
12 members
Mark Robson
Director
Ardel Wray
Screenplay
Jack J. Gross
Executive Producer
Val Lewton
Producer
Jack MacKenzie
Director of Photography
Leigh Harline
Original Music Composer
Jean L. Speak
Sound Recordist
Albert S. D'Agostino
Art Direction
Walter E. Keller
Art Direction
Albert Greenwood
Set Decoration
Darrell Silvera
Set Decoration
Lyle Boyer
Editor