Cécile Is Dead (1944), directed by Maurice Tourneur, follows Inspector Maigret as he investigates the murder of a young woman whose earlier claims of being threatened were dismissed, leading to a complex case involving identity, deception and hidden motives. The film is part of the Maigret adaptations based on Georges Simenon’s detective novels.

Från IMDB:
A woman keeps coming to Quai Des Orfevres to see Inspector Maigret about disturbing events in her household.Maigret and his colleagues are annoyed, until this woman is found dead and they realize she was on to something.