cast
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Michel Simon
Professor Charles Buisson
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Brigitte Auber
Gisèle, student of Buisson
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Henri Génès
Lucien Mosca, boss of Ruban Bleu
- Germaine Kerjean Mrs. Rédéri
- Anne Campion The determined trafficker
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Philippe Mareuil
Pierre-Dominique, aka 'Pépé'
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Robert Lombard
Maurice, Buisson's assistant
- Georges Galley Patrice
- Suzanne Norbert Mrs. Buisson
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Gaby Basset
Henriette, washroom attendant
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Micheline Dax
The indecisive snob
- Leila Lampi Russian Princess
- Janine Clairville Woman from Paris
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Nadine Tallier
Poupette, presenter of the show
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Annick Tanguy
Woman from Paris
- Liane Morice Woman from Paris
- Nikitine Woman from Paris
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Liliane Montevecchi
Woman from Paris
- Jacqueline Ventura Woman from Paris
- Gisèle Fréry Woman from Paris
- Nicole Rimbaud Cloakroom attendant
- Janine Caire Florist
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Bernard Lajarrige
Inspector Corbin
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Robert Lamoureux
Self
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Patachou
Self
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Ray Ventura
Self
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Jean-Marc Thibault
Self
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Roger Pierre
Self
- Les Quat'Jeudis Self
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Jacques Grello
Narrator
- Françoise Alban Magda, the pregnant dancer (uncredited)
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Jack Ary
Cowboy (uncredited)
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Danièle Delorme
Young female client of Ruban Bleu (uncredited)
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Sophie Desmarets
Self (uncredited)
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Sacha Distel
Self (uncredited)
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Pierre Duncan
Policeman at Quai des Orfèvres (uncredited)
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Bob Ingarao
Arsène the toothless (uncredited)
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Dominique Marcas
Woman with stomach ache (uncredited)
- Michel Seldow Police officer (uncredited)
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Henri Serre
Young customer of Ruban Bleu (uncredited)