Willy Ferrière is a gambler living beyond his means, and his mistress is as greedy as he's dead broke. One day, he says out of loud in a a Montparnasse café that he would give 100,000 francs to get rid of his wealthy aunt so he could claim his inheritance. Someone secretly lets Willy know it's a deal. The old lady is murdered, and a low-life criminal is manipulated to be the perfect suspect. But Superintendant Maigret feels something is wrong.
Harry Baur
as Commissaire Jules Maigret
Valéry Inkijinoff
as Radek
Alexandre Rignault
as Joseph Heurtin
Gaston Jacquet
as Willy Ferrière
Gina Manès
as Edna Reichberg
Louis Gauthier
as Le juge
Henri Échourin
as Inspecteur Ménard
Marcel Bourdel
as Inspecteur Janvier
Frédéric Munié
as L'avocat
Armand Numès
as Le directeur de la police
Charles Camus
as L'hôtelier
René Alexandre
as Le chauffeur
