Stephen Boyd as Philip Scott

Camilla Sparv as Toni Peters

Michael Redgrave as Harris

Leo McKern as Smith

Robert Hoffmann as Paul Spiegler

Jeremy Kemp as Hal

Jane Merrow as Martine

Carl Möhner as Inspektor

Vivi Bach as Erika Herschel

Werner Peters as Kramer

Dieter Geissler as Kurt

John Alderton as George Innes

Jan Werich as Dr. Spiegler

David Healy as David

Ursula Howells as Estelle

Basil Dignam as Howlett

Geoffrey Bayldon as The Boffin

Joachim Hansen as Heinrich Herschel

Marte Harell as Mrs. Peters

Friedrich von Thun as Rolf

Herbert Fux as Bavarian tourist

Jennifer White as Air Hostess

Karl-Otto Alberty as

Andrea Allan as

Alexander Allerson as

Peter Capell as

Windsor Davies as

Heinz-Leo Fischer as

Alastair Hunter as

Olga Linden as

Myrtill Nádasi as

Erika Raffael as

Rosemarie Reede as

Catherine Schell as

Helmuth Schneider as

Friedrich von Ledebur as

Gert Wiedenhofen as

Howard Williams as