Mai Zetterling as Lidia

Robert Beatty as Campbell Reid

Guy Rolfe as Major Lawrence

Herbert Lom as Fritz Kottler Hendlemann

Patrick Holt as Ferguson

Arnold Marlé as Professor Franz Menzel

Sybille Binder as Eitel Hendlemann

Thora Hird as Mrs. Skinner

Gerard Heinz as Heine

Yvonne Owen as Helen

George Thorpe as Brigadier

Philo Hauser as Hans Ackermann

John Blythe as Johnnie

Cyril Chamberlain as Supervisor

Betty Lynne as Interpreter

Nelly Arno as Anna Skutetsky

Richard Molinas as Man in Crowd with Anna

Donald Sinden as Minor Role

Hugo Schuster as Interpreter

Eric Messiter as Coroner

Dorothea Glade as Hildegard Schmidt

Michael Hordern as Johnson

Pete Murray as Lieutenant Keith

Gordon Bell as Captain Roberts

Sam Kydd as Army Truck Driver

Eric Pohlmann as Search Group Leader

Anthony Steel as Bridegroom

Arthur Hambling as Coroner's Officer (uncredited)

Paul Hansard as Fritz (uncredited)

Dennis Harkin as Richard (uncredited)

Charles Rolfe as Art Gallery Attendant (uncredited)

Dennis Vance as Orderly, Officer's Mess (uncredited)

Arthur Young as Club Pianist (uncredited)