On screen
Cast
33 credited performers
Clive Brook
Dr. Karl Roder
Diana Wynyard
Irena Roder
Raymond Huntley
Rabenau
Derek Farr
Hans Glaser
Joyce Howard
Elly Schmidt
Howard Marion-Crawford
Kummer
John Penrose
Otto
Morland Graham
Father Landbach
Ronald Squire
Rudolf Spiedler
Reginald Beckwith
Emil Fenner
Clifford Evans
Dressler
Bernard Miles
Capt. Muller
Gibb McLaughlin
Dr. Weiner
Artwork unavailable
Muriel George
Hanna
Martita Hunt
Frau Lehmann the Concierge
Hay Petrie
Sebastian
Manning Whiley
S.S. Trooper
Katie Johnson
Granny Schmidt
George Hayes
Policeman
Everley Gregg
Maria Tattenheim
Marie Ault
Woman Customer
Abraham Sofaer
Heini
Joan Hickson
Katie
Artwork unavailable
Wyndham Milligan
S.S. Guard
Artwork unavailable
Bunty Payne
Erna
Artwork unavailable
Pat McGrath
Kurt
Ken Annakin
Radio Announcer (voice) (uncredited)
Ernest Butcher
Chestnut Seller (uncredited)
William Hartnell
Radio Location Aerial Operator (uncredited)
Artwork unavailable
Mike Johnson
Fritz - Fenner's Dresser (uncredited)
Artwork unavailable
Ben Williams
Nagel - Radio Location Expert (uncredited)
Artwork unavailable
Victor Wood
(uncredited)
Artwork unavailable
Howard Lang
Radio Operator (uncredited)