Jean Simmons
Sophie Malraux
Trevor Howard
Maj. David Somers
Sonia Dresdel
Jess Fenton
Barry Jones
Nicholas Fenton
Kenneth More
Willy Shepley
Geoffrey Keen
Police Inspector
André Morell
Secret Service Chief Chubb (as Andre Morell)
Michael Brennan
Police Superintendent
Gerard Heinz
Dr. Karl Cesare
Lily Kann
Minna Cesare
Eric Pohlmann
Taxidermist
Richard Wattis
Employment Agent
Sandra Dorne
Kyra
Maire O'Neill
Nora
Maxwell Reed
Hick
Marianne Stone
Young Woman at Nora's House (uncredited)