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.


The Serpent (1973)
One of these men is working for the C.I.A.
Overview
Director, Screenplay
Screenplay
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Yul Brynner
Col. Alexi Vlassov

Henry Fonda
Alan Davies

Dirk Bogarde
Philip Boyle

Virna Lisi
Mrs. Annabel Lee

Robert Alda
Polygraph interrogator

Farley Granger
Computer Programming Director

Philippe Noiret
Lucien Berthon

Michel Bouquet
Tavel

Martin Held
Lepke