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Renée Saint-Cyr as Bella Fontanges |
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Jean-Claude Pascal as Georges de Ségar / l'inconnu |
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Jean Servais as le châtelain |
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Grégoire Aslan as le préfet de police |
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Annette Poivre as Blanche |
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Louis de Funès as Adrien Verduret |
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Pierre Destailles as l'inspecteur Leblanc |
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Roger Blin as le valet |
| Directing | Robert Darène | Director |
| Writing | Jean Anouilh | Writer |
| Writing | Robert Dhéry | Writer |
| Directing | Georges Lautner | Assistant Director |
| Editing | Germaine Artus | Editor |
| Art | Robert Gys | Production Design |
| Production | Renée Saint-Cyr | Producer |
| Camera | Roger Hubert | Director of Photography |
| Production | Adolphe Osso | Producer |
| Costume & Make-Up | Ferdinand Junker | Costume Design |
| Production | Maurice Juven | Production Manager |
| Sound | Jean-Jacques Grünenwald | Original Music Composer |
