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Skådespelare
Robert Alda
Polygraph interrogator
Farley Granger
Computer Programming Director
Michel Bouquet
Tavel
Guy Tréjan
Deval
Nathalie Nerval
Tatiana Vlassov
Jean Desailly
Narrator (voice) (uncredited)
Yul Brynner
Col. Alexi Vlassov
Henry Fonda
Alan Davies
Dirk Bogarde
Philip Boyle
Marie Dubois
Suzanne
Paola Pitagora
Jeannine Santelli
Luigi Diberti
Lefèvre
Virna Lisi
Mrs. Annabel Lee
Philippe Noiret
Lucien Berthon
Elga Andersen
Kate Cross
André Falcon
French Diplomat
William Sabatier
Mercadier
Robert Party
Debecourt
Martin Held
Lepke
François Maistre
inspecteur Joss
Herbert Fux
Gardener
Eva Maria Meineke
Mrs von Strelitz