Trailer
Images
 | Yves Montand as L'inspecteur Grazzi |
 | Pierre Mondy as Le commissaire Tarquin |
 | Jean-Louis Trintignant as Éric Grandin, étudiant vétérinaire |
 | Jacques Perrin as Daniel |
 | Catherine Allégret as Bambi |
 | Simone Signoret as Eliane Darès, l'actrice éventée (Victime #4) |
 | Claude Mann as Jean-Loup Gabert, inspecteur stagière de Grazzi |
 | Michel Piccoli as René Cabourg, l'employé besogneux (Victime #2) |
 | Pascale Roberts as Georgette Thomas, assassinée (Victime #1) |
 | Charles Denner as Bob, l'amant sincère de Georgette Thomas |
 | Nadine Alari as Mme Grazzi |
 | Monique Chaumette as Mme Rivolani |
 | Christian Marin as Le beau-frère de Georgette, mari soumis |
 | Tanya Lopert as Mme Garaudy |
 | Jenny Orléans as La sœur de René Cabourg |
 | Serge Rousseau as Le contrôleur du train phocéen de nuit |
 | Bernadette Lafont as La sœur "mauvaise langue" de Georgette |
 | Maurice Chevit as Un inspecteur, sous les ordres de Tarquin |
 | Jacques Dynam as Un inspecteur, sous les ordres de Tarquin |
 | Paul Pavel as M. Rivolani, passager du compartiement (Victime #3) |
 | Philippe Rouleau as L'inspecteur Antoine |
 | André Valmy as Un inspecteur, sous les ordres de Tarquin |
 | Daniel Gélin as Le vétérinaire titulaire, chargé de cours (uncredited) |
 | Françoise Arnoul as Une infirmière à l'école vétérinaire (uncredited) |
 | Dominique Zardi as Un inspecteur au bistrot (uncredited) |
 | Claude Berri as Un porteur à la gare de Lyon (uncredited) |
 | Marcel Bozzuffi as Un agent de police (uncredited) |
 | Nicole Desailly as La concierge d'Eliane (uncredited) |
 | Denise Péron as Une pocharde (uncredited) |
 | Claude Dauphin as Le frère d'Eliane (uncredited) |
 | Edmond Ardisson as Le policier marseillais (voice) (uncredited) |
 | José Artur as Un journaliste (uncredited) |
 | Maurice Auzel as Un inspecteur au café (uncredited) |
| Dominique Bernard as Un employé de la SNCF (uncredited) |
 | Lucien Desagneaux as L'homme qui embrasse une femme à la brasserie (uncredited) |
 | Jean Droze as Une personne auditionnée dans les locaux de la Police Judiciaire (uncredited) |
 | Charles Gérard as Un travesti près du kiosque à journaux (uncredited) |
 | Georges Géret as Un agent de police (uncredited) |
 | Clément Harari as Une "femme" au bistrot (uncredited) |
 | Jean Lefebvre as (uncredited) |
 | Serge Marquand as Un amant de Georgette (uncredited) |
 | Albert Michel as Le patron du bistrot (uncredited) |
 | Charles Millot as Le médecin légiste (uncredited) |
 | Paul Bernard as (uncredited) |
| Jean-Pierre Périer-Pillu as (uncredited) |
 | Robert Sabatier as (uncredited) |
 | William Sabatier as Le commissaire Tuffi (uncredited) |
 | Jacqueline Staup as La supérieure hiérarchique de Bambi (uncredited) |
 | Josée Steiner as L'employée de l'hôtel Arizona (uncredited) |
 | Lionel Vitrant as Un inspecteur (uncredited) |
 | André Weber as Le poivrot arrêté, dans les locaux de la Police Judiciaire (uncredited) |
| Sound | |
| Michel Magne | Original Music Composer |
Writing | |
| Sébastien Japrisot | Novel |
Directing | |
| Costa-Gavras | Director |
Camera | |
| Jean Tournier | Director of Photography |
Art | |
| Rino Mondellini | Art Direction |
Sound | |
| Jean Nény | Sound Re-Recording Mixer |
Production | |
| Julien Derode | Producer |
Writing | |
| Costa-Gavras | Writer |
Editing | |
| Christian Gaudin | Editor |
Production | |
| Jean Paul Delamotte | Production Manager |
| Serge Lebeau | Production Manager |
Directing | |
| Bernard Paul | First Assistant Director |
| Jean-Pierre Périer-Pillu | Assistant Director |
Sound | |
| Jacques Carrère | Sound Engineer |
| Joseph de Bretagne | Sound Engineer |
Directing | |
| Annie Maurel | Script Supervisor |
