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Lino Ventura as Géo Paquet, Le Gorille |
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Charles Vanel as Colonel Berthomieu |
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Pierre Dux as Veslot |
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Bella Darvi as Isolène |
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René Lefèvre as Commissioner Blavet |
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Robert Manuel as Casa |
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André Valmy as Mauricet |
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Henri Crémieux as X.A. Pallos |
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Jean-Roger Caussimon as Léon |
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Jean-Max as Councilor Smolen |
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Jean-Marie Rivière as Valério |
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Yves Barsacq as Berthier |
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François Darbon as Popaul |
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René Bergeron as Antoine Legrand, first hygiene inspector |
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Maurice Chevit as Second hygiene inspector |
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Guy Mairesse as Killer |
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Jacques Seiler as Principal Inspector Antier |
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Robert Berri as Combinat |
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Jean-Pierre Mocky as Sébut |
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Marie Sabouret as Chaboute |
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Jean Mercure as Director of the DST |
| Writing | Antoine-Louis Dominique | Novel |
| Directing | Bernard Borderie | Director |
| Writing | Bernard Borderie | Writer |
| Writing | Antoine-Louis Dominique | Writer |
| Writing | Jacques Robert | Writer |
| Production | Raoul Ploquin | Producer |
| Editing | Jacqueline Brachet | Editor |
| Sound | Jean Leccia | Music |
| Sound | Georges van Parys | Music |
| Camera | Louis Page | Director of Photography |
