- Country: France
- Genres: Comedy, Crime, Mystery
- Release: 1947-08-16
- Director: Henri-Georges Clouzot
- Writers: Stanislas-André Steeman , Henri-Georges Clouzot
- Language: French
- Stars: Pierre Fresnay , Suzy Delair , Jean Tissier , Pierre Larquey , Noël Roquevert , René Génin (1890–1967) , Jean Despeaux , Marc Natol , Huguette Vivier , Odette Talazac
- Runtime: 84 min
- Awards: N/A
- AKA: 犯人は21番に住む (Japan) , L'assassin habite... au 21 (France, French Republic) , Morderca mieszka pod 21 (Poland) , Der Mörder wohnt Nr. 21 (Austria) , O Assassino Mora... no 21 (Portugal, Portuguese Republic) , L'assassí viu al número 21 (Spain) , Mördaren utan ansikte (Sweden) , Вбивця живе в домі... #21 (Ukraine) , Murhaaja asuu numerossa 21 (Finland) , A gyilkos a 21-ben lakik (Hungary) , L'assassino abita al 21 (Italy) , Ubica stanuje u broju 21 , L'assassin habite au 21 (Canada) , O dolofonos katoikei sto 21 (Greece) , The Murderer Lives at Number 21 (United States of America) , Morderen bor i nr. 21 (Norway) , The Murderer Lives at #21 (United States of America) , L'Assassin habite au 21 (France, French Republic) , El asesino vive en el 21 (Mexico) , Der Mörder wohnt in Nr. 21 (Germany) , El asesino vive en el 21 (Argentina) , The Murderer Lives at Number 21 (United Kingdom) , Mördaren utan ansikte (Finland) , L'assassin habite... au 21 , O Assassino Mora no 21 (Brazil) , Det skete i Nr. 21 (Denmark) , The Murderer Lives at Number 21 , Убиецът живее на номер 21 (Bulgaria) , Asasinul locuieste la nr. 21 (Romania) , El asesino vive en el 21 (Spain) , Убиецът живее на Nr. 21 (Bulgaria) , The Murderer Lives at Number 21 (Canada) , De moordenaar woont op nr. 21 (Netherlands the) , Убийца живет в доме... No 21 De moordenaar woont op nr. 21 (Netherlands), Der Mörder wohnt in Nr. 21 (Germany), Der Mörder wohnt Nr. 21 (Austria), Det skete i Nr. 21 (Denmark), El asesino vive en el 21 (Spain), L'assassí viu al número 21 (Spain), L'assassino abita al 21 (Italy), Mördaren utan ansikte (Finland), Mördaren utan ansikte (Sweden), Morderca mieszka pod 21 (Poland), Murhaaja asuu numerossa 21 (Finland), O Assassino Mora no 21 (Brazil), O dolofonos katoikei sto 21 (Greece), The Murderer Lives at #21 (USA), The Murderer Lives at Number 21 (English), Ubica stanuje u broju 21 (Yugoslavia), Убиецът живее на Nr. 21 (Bulgaria), Убийца живет в доме... No 21 (Soviet Union), 杀手住在21号 (China)
- Plot: Dapper Inspector Vorobechik ('Wens' for short) is assigned the case of a serial killer who leaves a calling card on his victims; Monsieur Durand. Wens' mistress, struggling actress Mila Malou, determines to get publicity for herself by helping him. Learning that Durand is one of the eccentric tenants of a boarding house at No. 21 Avenue Junot, Wens takes a room in the guise of a Protestant minister; only to be followed by Mila who hardly seems like a minister's wife! Suspects are arrested, but while each is in jail, there's another murder...
- IMDB:tt0034478
L’assassin habite… au 21 Cast · · · ALL
Henri-Georges Clouzot
Director
Pierre Fresnay
Commissaire Wens
Suzy Delair
Mila Malou
Jean Tissier
Triquet
Pierre Larquey
Mr. Colin
Noël Roquevert
Dr. Linz
René Génin
(1890–1967)
Alfred
Marc Natol
Armand
Huguette Vivier
Nurse Vania
Odette Talazac
Madame Point
Maximilienne
Miss Cuq
Louis Florencie
Commissaire Monnet
André Gabriello
Police Officer Pussot
Raymond Bussières
Turelot
Antoine Balpêtré
Albert (uncredited)
Léon Belières
Businessman (uncredited)
René Blancard
Inspector Picard (uncredited)
Lucien Blondeau
Police Prefect Edouard (uncredited)
Geo 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
(1898–1974)
Inspector Ballandieu (uncredited)
Martial Rèbe
Cashier (uncredited)
Maurice Salabert
Cycling Police Officer (uncredited)