L'assassin habite au… 21
- İl: 1942
- Ölkə: France
- Janr: Comedy, Mystery, Thriller
- Studiya: Continental Films
- Açar söz: paris, france, based on novel or book, serial killer, boarding house, french noir, police inspector
- Direktor: Henri-Georges Clouzot
- Oyuncu: Pierre Fresnay, Suzy Delair, Jean Tissier, Pierre Larquey, Noël Roquevert, René Génin