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Albert Préjean as Le commissaire Maigret |
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Santa Relli as Cécile |
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Germaine Kerjean as Madame Boynet |
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Luce Fabiole as Madame Petitot, la concierge |
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Liliane Maigné as Nouchi |
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André Gabriello as Lucas (as Gabriello) |
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Jean Brochard as Dandurand |
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Yves Deniaud as Machepied |
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André Reybaz as Gérard Pardon |
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Marcel Carpentier as Dr. Pierre |
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Marcel André as Le directeur de la P.J. |
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Henry Bonvallet as Le juge d'instruction (as Henri Bonvalet) |
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Charles Blavette as Monfils |
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France Asselin as Hélène Pardon (uncredited) |
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Paul Barge as Monsieur Louis (uncredited) |
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Jacques Beauvais as Monsieur Paul (uncredited) |
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Fernand Blot as Un inspecteur (uncredited) |
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Charles Camus as Léopold (uncredited) |
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Jean Clarieux as Voyageur dans le métro (uncredited) |
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Marius David as (uncredited) |
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Charlotte Ecard as L'amie de la concierge (uncredited) |
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Pierre Ferval as Un gendarme (uncredited) |
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Eugène Frouhins as Le serrurier (uncredited) |
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Gustave Gallet as Le médecin (uncredited) |
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Alice Gosset as La femme au tandem (uncredited) |
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Georges Gosset as L'homme au tandem (uncredited) |
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Charles Lavialle as Le raccommodeur de faïence (uncredited) |
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Jean Martin as Le garçon d'étage (uncredited) |
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Marcel Melrac as Le chauffeur de taxi (uncredited) |
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Geneviève Morel as Une amie de Madame Petiot (uncredited) |
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Julienne Paroli as La femme de ménage (uncredited) |
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Marcel Raine as Un complice de Dandurand (uncredited) |
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Maurice Salabert as Un inspecteur (uncredited) |
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Henri Vilbert as Un inspecteur (uncredited) |
| Directing | Maurice Tourneur | Director |
| Sound | Roger Dumas | Original Music Composer |
| Writing | Michel Duran | Dialogue |
| Writing | Georges Simenon | Novel |
| Editing | Gérard Bensdorp | Editor |
| Sound | Georges Leblond | Sound |
| Writing | Jean-Paul Le Chanois | Adaptation |
| Camera | Pierre Montazel | Director of Photography |
| Art | Guy de Gastyne | Production Design |
