Industrialist Pierre Verdier kills his mistress Jeanne Ancelin by throwing her off a train. Her husband, Ancelin, decides to take revenge on his wife's murderer, who has been acquitted by justice.
| Directing | Édouard Molinaro | Director |
| Art | Georges Lévy | Production Design |
| Writing | Gérard Oury | Screenplay |
| Writing | Pierre Boileau | Novel |
| Writing | Thomas Narcejac | Novel |
| Editing | Monique Isnardon | Editor |
| Writing | Alain Poiré | Screenplay |
| Writing | Georges Tabet | Dialogue |
| Production | Henry Deutschmeister | Producer |
| Production | Alain Poiré | Producer |
| Sound | Barney Wilen | Original Music Composer |
| Writing | Édouard Molinaro | Screenplay |
| Editing | Robert Isnardon | Editor |
| Camera | Henri Decaë | Director of Photography |
| Writing | André Tabet | Dialogue |
| Production | Moris Ergas | Producer |
