Derrière la façade (1939)

The owner of an apartment building is found murdered. Two rival policemen, Boucheron and Lambert, investigate the matter and get into the private lives of the tenants: an unfaithful judge, a crippled blind man and his daughter, an eccentric knife thrower, a shoplifter (and proud of it!), a bourgeois lady who has a bone to pick with a gigolo, a mistress who cheats on her lover, not forgetting the caretaker and a soldier in love...