Générique complet
L'assassin habite au… 21
Pierre Fresnay
Commissaire Wens
Suzy Delair
Mila Malou
Jean Tissier
Triquet
Pierre Larquey
Mr. Colin
Noël Roquevert
Dr. Linz
René Génin
Alfred
Jean Despeaux
Kid Robert
Marc Natol
Armand
Huguette Vivier
Nurse Vania
Odette Talazac
Madame Point
Maximilienne
Miss Cuq
Sylvette Saugé
Christiane
Louis Florencie
Commissaire Monnet
André Gabriello
Police Officer Pussot
Raymond Bussières
Turelot
Antoine Balpêtré
Albert (uncredited)
Paul Barge
Ernest (uncredited)
Léon Bélières
Businessman (uncredited)
René Blancard
Inspector Picard (uncredited)
Lucien Blondeau
Police Prefect Edouard (uncredited)
Louis Denalair
Police Inspector (uncredited)
Géo Forster
Guest (uncredited)
Gustave Gallet
Judicial Police Director (uncredited)
Léon Larive
Mr. Albert (uncredited)
Albert Malbert
Taxi Driver (uncredited)
Maurice Marceau
Bistro Client (uncredited)
Marcel Pérès
Inspector Ballandieu (uncredited)
Martial Rèbe
Cashier (uncredited)
Maurice Salabert
Cycling Police Officer (uncredited)
Evelyne Séjourné
Handmaid (uncredited)
Guy Sloux
Journalist Destirac (uncredited)
André Varennes
Brigadier (uncredited)
Henri Vilbert
Police Officer (uncredited)
