Casting | Rôle |
|---|
| 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) |
