Patrick Dewaere

as Paul Kerjean

Michel Auclair

as Michel Saint-Claude, director of GTI-Europe

Caroline Cellier

as Hélène Kerjean

Charles Denner

as Walter, private detective

Anny Duperey

as Laura Weber, JBL's mistress

Jeanne Moreau

as Madame Benoît-Lambert

Mel Ferrer

as Cornelius A. Woaegen, president of GTI

Jean-Laurent Cochet

as Serge Hartmann, director of La Tribune