A Thousand Billion Dollars

Patrick Dewaere Paul Kerjean

Michel Auclair Michel Saint-Claude, director of GTI-Europe

Caroline Cellier Hélène Kerjean

Charles Denner Walter, private detective

Anny Duperey Laura Weber, JBL's mistress

Jeanne Moreau Madame Benoît-Lambert

Mel Ferrer Cornelius A. Woaegen, president of GTI

Jean-Laurent Cochet Serge Hartmann, director of La Tribune

Fernand Ledoux Mr. Guérande

André Falcon Pierre Bayen, editor-in-chief

Claude Vernier Dr. Gerhard Kramer

Édith Scob Madame Bronsky

Jacques François Fred Great

Robert Party Jacques Benoît-Lambert, aka 'JBL'

Jean-Pierre Kalfon Bronsky, then Stan Hankins, the informant

Jean Mercure Joachim Holstein, Director of GTI-Austria

Claude Marcault Kerjean's secretary

Jacques Maury Jack Sleiter, director of GTI

Jacqueline Doyen Arlène Robert

Marc Eyraud Sylvestre