Christopher Plummer as Freddie Chapman

Romy Schneider as Helga Lindstrom (The Countess)

Trevor Howard as Freddie Young (Distinguished Civilian)

Gert Fröbe as Colonel Steinhager

Claudine Auger as Paulette

Yul Brynner as Baron von Grunen

Harry Meyen as Lieutenant Keller

Georges Lycan as Leo

Jess Hahn as Commander Braid

John Abbey as Lang

Gil Barber as Bergman

Jean-Claude Bercq as Major Von Leeb

Paul Bonifas as Charlie

Jean-Roger Caussimon as Luftwaffe General (as Jean Rene Caussimon)

Annette Claudier as Prison Clerk

Jean Claudio as Sergeant Thomas

Pierre Collet as German Warder

Anthony Dawson as Major Stillman

Georges Douking as Polish Interrogator

Colin Drake as English Farmer

Robert Favart as General Dalrymple

Fred Fisher as German Admiral

Bernard Fresson as French Resistant Raymond

Gisèle Grimm as Major Lawrence

Harvey Hall as Detainee Center Sergeant

Clément Harari as Losch

Jacques Harden as Canadian Prisoner

David Hutcheson as Ministry Official

Marcel Journet as Marshall von Runstedt

Morteza Kazerouni as Freddie, the Chauffeur

Richard Larke as Jersey Prison Warder

Robert Le Béal as Lieutenant Cameron

Violette Marceau as Prisoner Girl

Guy Marly as Luftwaffe Officer

Jacques Mayar as S.S. Lieutenant

Paul Mesnier as Wehrmacht General

Charles Millot as 2nd Polish Interrogator

Hubert Noël as Von Runstedt's Aide de Camp

Jean Ozenne as Gal Von Langsdorf

Marcel Roche as Jersey Prison Head Warder (as Marcel Roth)

Albert Simono as B.B.C. Reporter

Anthony Stuart as Wing Commander

Michel Thomass as 3rd Polish Interrogator

Edward Underdown as Air Marshall

François Valorbe as S.S. Commandant

Van Doude as Plotting Officer

Howard Vernon as German Embassy Official

Francis de Wolff as German Colonel General

Jean-Pierre Zola as Jersey Prison Commandant

Jean-Marc Bory as Resistance Leader (uncredited)

Gordon Jackson as British Sergeant Questioning Chapman (uncredited)

Colin McKenzie as Policeman (uncredited)

Laure Paillette as Old Lady (uncredited)

Frank Phillips as Radio Announcer (voice) (uncredited)

Robert Rietti as B.B.C. Reporter (voice) (uncredited)

Jeff Silk as Policeman (uncredited)

Sylvia Sorrente as Hostess in the Club (uncredited)