Alfred Hitchcock	...	(Director)
Leon Uris, Samuel A. Taylor	...	(Writer)
Frederick Stafford	...	Andre Devereaux
Dany Robin	...	Nicole Devereaux
John Vernon	...	Rico Parra
Karin Dor	...	Juanita de Cordoba
Michel Piccoli	...	Jacques Granville
Philippe Noiret	...	Henri Jarre
Claude Jade	...	Michele Picard
Michel Subor	...	Francois Picard
Per-Axel Arosenius	...	Boris Kusenov
Roscoe Lee Browne	...	Philippe Dubois
Edmon Ryan	...	McKittreck
Sonja Kolthoff	...	Mrs. Kusenov
Tina Hedström	...	Tamara Kusenov
John Van Dreelen	...	Claude Martin
Donald Randolph	...	Luis Uribe (as Don Randolph)

Summary: A high ranking Russian official defects to the U.S., where he is interviewed by U.S. Agent Michael Nordstrom. The defector reveals that a French spy ring codenamed "Topaz" has been passing N.A.T.O. secrets to the Russians. Michael calls in his French friend and counterpart Andre Devereaux to expose the spies.