- Marcel Carpentier - Dr. Pierre
- Marcel André - Le directeur de la P.J.
- Henry Bonvallet - Le juge d'instruction (as Henri Bonvalet)
- Charles Blavette - Monfils
- France Asselin - Hélène Pardon (uncredited)
- Paul Barge - Monsieur Louis (uncredited)
- Jacques Beauvais - Monsieur Paul (uncredited)
- Fernand Blot - Un inspecteur (uncredited)
- Charles Camus - Léopold (uncredited)
- Jean Clarieux - Voyageur dans le métro (uncredited)
- Marius David - (uncredited)
- Charlotte Ecard - L'amie de la concierge (uncredited)
- Pierre Ferval - Un gendarme (uncredited)
- Eugène Frouhins - Le serrurier (uncredited)
- Gustave Gallet - Le médecin (uncredited)
- Alice Gosset - La femme au tandem (uncredited)
- Georges Gosset - L'homme au tandem (uncredited)
- Charles Lavialle - Le raccommodeur de faïence (uncredited)
- Jean Martin - Le garçon d'étage (uncredited)
- Marcel Melrac - Le chauffeur de taxi (uncredited)
- Geneviève Morel - Une amie de Madame Petiot (uncredited)
- Julienne Paroli - La femme de ménage (uncredited)
- Marcel Raine - Un complice de Dandurand (uncredited)
- Maurice Salabert - Un inspecteur (uncredited)
- Henri Vilbert - Un inspecteur (uncredited)
- Maurice Tourneur
- Georges Simenon
- Jean-Paul Le Chanois
- Michel Duran
Capítulo disponible en las siguientes plataformas:
