The cruel and abusive headmaster of a boarding school, Michel Delassalle, is murdered by an unlikely duo -- his meek wife and the mistress he brazenly flaunts. The women become increasingly unhinged by a series of odd occurrences after Delassalle's corpse mysteriously disappears.
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| Sound | Georges Van Parys | Original Music Composer |
| Camera | Armand Thirard | Director of Photography |
| Directing | Henri-Georges Clouzot | Director |
| Sound | William Robert Sivel | Sound Designer |
| Production | Henri-Georges Clouzot | Producer |
| Art | Léon Barsacq | Art Direction |
| Editing | Madeleine Gug | Editor |
| Directing | Jeanne Witta | Script Supervisor |
| Camera | Jean Lallier | Camera Operator |
| Camera | Louis Née | Camera Operator |
| Camera | Robert Juillard | Camera Operator |
| Camera | Jacques Robin | Camera Operator |
| Production | Georges Lourau | Producer |
| Costume & Make-Up | Simone Knapp | Hairstylist |
| Costume & Make-Up | Anatole Paris | Makeup Artist |
| Costume & Make-Up | Carven | Costume Design |
| Directing | Michel Romanoff | Assistant Director |
| Camera | Léo Mirkine | Still Photographer |
| Writing | Henri-Georges Clouzot | Writer |
| Writing | Jérôme Géronimi | Writer |
| Writing | Frédéric Grendel | Script Consultant |
| Writing | Thomas Narcejac | Novel |
| Writing | Pierre Boileau | Novel |
| Writing | René Masson | Script Consultant |
| Camera | Daniel Diot | Assistant Camera |
| Camera | Robert Joffres | Still Photographer |
| Camera | Jean Dicop | Assistant Camera |
| Production | Georges Testard | Unit Manager |
| Production | Louis de Masure | Production Manager |
