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Jean-Paul Belmondo as Commissioner Jean Letellier |
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Charles Denner as Inspector Moissac |
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Adalberto Maria Merli as Pierre Valdeck / Minos |
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Rosy Varte as Germaine Doizon |
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Jean Martin as Divisional commissioner Sabin |
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Lea Massari as Norah Elmer |
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Jean-François Balmer as Julien Dallas, student |
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Catherine Morin as Hélène Grammont |
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Roland Dubillard as Psychologist |
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Henry Djanik as Police inspector |
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Germana Carnacina as Pamela Sweet |
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Giovanni Cianfriglia as Marcucci |
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Jacques Paoli as Self |
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Philippe Brigaud as Neighborhood commissioner |
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Roger Riffard as Watchman Eugène Merclin |
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Georges Riquier as Prefect |
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Jean-Louis Le Goff as Sub-prefect |
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Maurice Vallier as Guest who goes to the wrong door |
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Maurice Auzel as Inspector |
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Henri-Jacques Huet as Julio Cortes, Norah's lover |
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Jacques Rispal as 'Cacahuète' |
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Jean-Louis Fortuit as Police inspector |
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Gilberte Géniat as Germaine Doizon's concierge |
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Michel Berreur as Armed robber (uncredited) |
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Pierre Douglas as Radio journalist (uncredited) |
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André Valardy as Radio reporter (uncredited) |
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Albert Delpy as Sound engineer (uncredited) |
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Jacques Mathou as Tenant disturbed by Letellier (uncredited) |
| Costume & Make-Up | Charly Koubesserian | Makeup Artist |
| Directing | Henri Verneuil | Director |
| Writing | Henri Verneuil | Writer |
| Editing | Henri Lanoë | Editor |
| Directing | Lucile Costa | Script Supervisor |
| Editing | Pierre Gillette | Editor |
| Costume & Make-Up | Francesco Smalto | Costume Design |
| Camera | Marcel Gorvaisier | Still Photographer |
| Art | Jean André | Set Decoration |
| Writing | Jean Laborde | Dialogue |
| Camera | Charles-Henri Montel | Camera Operator |
| Writing | Francis Veber | Dialogue |
| Sound | Ennio Morricone | Original Music Composer |
| Camera | Jean Penzer | Director of Photography |
| Writing | Henri Verneuil | Story |
| Production | Jean-Paul Belmondo | Producer |
| Crew | Claude Carliez | Stunts |
| Crew | Rémy Julienne | Stunt Driver |
