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

Jean Claudio

Vittorio Orta, Director of GTI-Italy

Anthony Stuart

Accuser

Hans Verner

Kurt von Schroeder

Edward Marcus

GTI controller

Pierre Londiche

French interpreter in court

Camille Clavel

Bastien Kerjean

Edmond Bernard

Ralph von Lübeck

Frédérique Meininger

Concierge

François Viaur

Hotel receptionist

Marie-Pierre Casey

Madame Benoît-Lambert's maid

Jacques David

Police commissioner

Marc Fayolle

Enthusiastic reader

Yaseen Khan

Suta Burishawa

Roger Comte

Waiter at the brasserie

Marie-Christine Rolland

Secretary of the Walter agency

Yvonne Dany

Germaine Guérande (uncredited)

Rachid Ferrache

Éric Bronsky (uncredited)

Sacha Lavin

Madame Bayen (uncredited)

Fabienne Mai

Madame Holstein (uncredited)

Bernard Tachl

The follower (uncredited)