- Charles Lemontier - Mr. Legros
- Marcel Delaître - Inspector
- Paul Azaïs - Photographer
- Gaston Gabaroche - Forensic pathologist
- Jean Clarieux - Étienne
- René Worms - Friend
- Madeleine Gérôme - Saleswoman
- Pauline Carton - Aunt Eugénie
- Annette Poivre - Amélie
- Josée Ariel - (uncredited)
- René Lacourt - Un ami (uncredited)
- Franck Maurice - Un ouvrier de l'institut (uncredited)
- Marcel Portier - (uncredited)
- Liliane Robin - (uncredited)
- Christian Simon - (uncredited)
- Roger Vincent - (uncredited)
- Yvonne Yma - Une invitée (uncredited)
- Gilles Grangier
- Robert Beauvais
Capítulo disponible en las siguientes plataformas: