cast
- Stephen Boyd
- Philip Scott
- Camilla Sparv
- Toni Peters
- Michael Redgrave
- Harris
- Leo McKern
- Smith
- Robert Hoffman
- Paul Spiegler
- Jeremy Kemp
- Hall
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- Carl Möhner
- Inspector
- Vivi Bach
- Erika
- Werner Peters
- Kramer
- Dieter Geissler
- Kurt
- John Alderton
- George
- Jan Werich
- Dr. Spiegler
- David Healy
- David
- Geoffrey Bayldon
- Boffin
- Herbert Fux
- Bavarian tourist
- Frederick von Thun
- Rolfe
- Jane Merrow
- Martine
- Basil Dignam
- Howlett
- Joachim Hansen
- Heinrich Herschel
- Marte Harell
- Mrs. Peters
- Alastair Hunter
- Doorman
- Jenny White
- Air Hostess
- Friedrich Ledebur
- Proprietor
- Peter Capell
- Chalet Landlord
- Helmut Schneider
- Stranger
- Ursula Howells
- Estelle
- Catherine Schell
- Maggi
- Karl Otto Alberty
- Detective
crew
- Val Guest
- Director, Screenwriter
- Ben Arbeid
- Producer
- Maurice Foster
- Producer, Screenwriter
- Bill Strutton
- Screenwriter
- Hartley Howard
- Book Author
- Ken Hodges
- Cinematographer
- Basil Kirchin
- Composer (Music Score)
- Jack Slade
- Editor
- John Biezard
- Art Director
- John Blezard
- Art Director
- Yvonne Blake
- Costume Designer
