Peter Cushing
Dr. Victor Stein
Acting
Francis Matthews
Dr. Hans Kleve
Acting
Eunice Gayson
Margaret Conrad
Acting
Michael Gwynn
Karl
Acting
John Welsh
Bergman
Acting
Lionel Jeffries
Fritz
Acting
Oscar Quitak
Dwarf
Acting
Richard Wordsworth
Up Patient
Acting
John Stuart
Inspector
Acting
Michael Ripper
Kurt
Acting
Charles Lloyd Pack
President
Acting
Arnold Diamond
Molke
Acting
Marjorie Gresley
Countess Barscynska
Acting
Anna Walmsley
Vera Barscynska
Acting
George Woodbridge
Janitor
Acting
Ian Whittaker
Boy
Art
Avril Leslie
Girl
Acting
John Tatham
Manservant (uncredited)
Acting
Eugene Leahy
Kleine (uncredited)
Acting
Charles Gilliard
Policeman (uncredited)
Acting
Jimmy Charters
Patient (uncredited)
Acting
Julia Nelson
Inga (uncredited)
Acting
Robert Brooks Turner
Joseph the Groom (uncredited)
Acting