John Verney
Richard Widmark
Father Michael
Christopher Lee
Kollde (as Constantine De Goguel)
Constantine Gregory
Isabel
Anna Bentinck
German Matron
Irene Prador
Black Room Attendant
Brian Wilde
Sister Helle
Petra Peters
Airport Porter
William Ridoutt
Critic (Roger)
Howard Goorney
Salvation Army Major
Frances de la Tour
1st Girl
Zoe Hendry
2nd Girl
Lindy Benson
Catherine
Nastassja Kinski
3rd Girl
Jo Peters
4th Girl
Bobby Sparrow
Anna
Honor Blackman
Henry Beddows
Denholm Elliott
George de Grass
Michael Goodliffe
Eveline de Grass
Eva Maria Meineke
David
Anthony Valentine
Bishop
Derek Francis
Margaret
Izabella Telezynska
Director of Photography
David Watkin
Director
Peter Sykes
Screenplay
Christopher Wicking
Adaptation
John Peacock
Novel
Dennis Wheatley
Producer
Roy Skeggs
Original Music Composer
Paul Glass
Editor
John Trumper
Casting
Irene Lamb
Art Direction
Don Picton
Makeup Artist
George Blackler
Eric Allwright
Special Effects
Les Bowie
Still Photographer
Ray Hearne