Peter Cushing
Dr. Victor Stein
Peter Cushing
Dr. Victor Stein
Francis Matthews
Dr. Hans Kleve
Eunice Gayson
Margaret Conrad
Michael Gwynn
Karl
John Welsh
Bergman
Lionel Jeffries
Fritz
Oscar Quitak
Dwarf
Richard Wordsworth
Up Patient
John Stuart
Inspector
Michael Ripper
Kurt
Charles Lloyd Pack
President
Arnold Diamond
Molke
Marjorie Gresley
Countess Barscynska
Anna Walmsley
Vera Barscynska
George Woodbridge
Janitor
Ian Whittaker
Boy
Avril Leslie
Girl
John Tatham
Manservant (uncredited)
Eugene Leahy
Kleine (uncredited)
Charles Gilliard
Policeman (uncredited)
Jimmy Charters
Patient (uncredited)
Julia Nelson
Inga (uncredited)
Robert Brooks Turner
Joseph the Groom (uncredited)
George Baxt
Additional Dialogue
Leonard Salzedo
Original Music Composer
Terence Fisher
Director
Jack Asher
Director of Photography
Bernard Robinson
Production Design
Anthony Hinds
Producer
Henry Montsash
Hairstylist
Philip Leakey
Makeup Artist
Dorothy Holloway
Casting
Jimmy Sangster
Writer
Alfred Cox
Editor
Hurford Janes
Additional Dialogue
Michael Carreras
Executive Producer
Rosemary Burrows
Costume Design
Jock May
Sound Recordist
Alfred Cox
Sound Editor
Mary Shelley
Characters