The Serpent

Vlassov is a Soviet spy who defects in France. He is whisked to the U.S, where Allan Davies takes over the case. After polygraph tests and cross-examinations, Vlassov names several Western European agents who are also spying for the Soviets. Davies wants to take the listed agents into custody; meanwhile, those on the list start dying under mysterious circumstances.

• Henri VerneuilDirector
• Gilles PerraultScreenplay
• Ennio MorriconeOriginal Music Composer
• Henri VerneuilScreenplay

• Yul BrynnerCol. Alexi Vlassov
• Henry FondaAlan Davies
• Dirk BogardePhilip Boyle
• Virna LisiMrs. Annabel Lee
• Robert AldaPolygraph interrogator
• Farley GrangerComputer Programming Director
• Philippe NoiretLucien Berthon
• Michel BouquetTavel
• Martin HeldLepke
• Guy TréjanDeval
• Marie DuboisSuzanne
• Elga AndersenKate Cross