Mai Zetterling

Lidia

Robert Beatty

Campbell Reid

Guy Rolfe

Major Lawrence

Herbert Lom

Fritz Kottler Hendlemann

Patrick Holt

Ferguson

Arnold Marlé

Professor Franz Menzel

Sybille Binder

Eitel Hendlemann

Thora Hird

Mrs. Skinner

Gerard Heinz

Heine

Yvonne Owen

Helen

John Blythe

Johnnie

Cyril Chamberlain

Supervisor

Donald Sinden

Minor Role

Michael Hordern

Johnson

Sam Kydd

Army Truck Driver

Eric Pohlmann

Search Group Leader

Anthony Steel

Bridegroom

Arthur Hambling

Coroner's Officer (uncredited)

Paul Hansard

Fritz (uncredited)

Dennis Vance

Orderly, Officer's Mess (uncredited)

Arthur Young

Club Pianist (uncredited)