Inspector Maigret is traveling to the French countryside to visit his friend, the duchess of Saint-Fiacre. She has received a letter recently stating that she will die soon. A few days later she does so by an heart attack, but Maigret does not believe in this. The climax of the movie is the final diner. Of course Inspector Maigret is played by Jean Gabin. movie made from the Novel by Georges Simenon.