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Jean-Claude Brialy as Marc Desgrez |
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Claude Rich as Stéphane Desgrez |
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Édith Scob as Marie D'Aubray Boissand |
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Perrette Pradier as Lucie Desgrez |
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Nadja Tiller as Nurse Myra Schneider |
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Walter Giller as Michel Boissand |
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Antoine Balpêtré as Dr. Hermann |
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René Génin as Frédéric Henderson |
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Héléna Manson as Augusta Henderson |
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Frédéric Duvallès as Mathias Desgrez |
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Claude Piéplu as Inspector Krauss |
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Dany Jacquet as Frieda |
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Gabriel Jabbour as Jacob Kramer, le bijoutier |
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Laurence Belval as |
| Writing | Charles Spaak | Author |
| Writing | Julien Duvivier | Author |
| Writing | John Dickson Carr | Author |
| Directing | Julien Duvivier | Director |
| Sound | Georges Auric | Original Music Composer |
| Camera | Roger Fellous | Director of Photography |
| Production | Michel Romanoff | Producer |
| Production | Julien Duvivier | Producer |
| Production | Yvon Guézel | Producer |
| Sound | Guy Chichignoud | Sound Engineer |
| Costume & Make-Up | Suzanne Pinoteau | Costumer |
| Art | Peter Martin | Set Decoration |
| Editing | Paul Cayatte | Editor |
| Costume & Make-Up | Louis Féraud | Costume Design |
| Costume & Make-Up | Werner Schröder | Makeup Artist |
| Art | Willy Schatz | Art Direction |
| Costume & Make-Up | Candide | Costume Design |
| Costume & Make-Up | Yvonne Fortuna | Makeup Artist |
