Félicie by Georges Simenon

In this novel, Inspector Maigret is drawn into a complex investigation following the murder of a man named Jules Lapie, known as "The Lion." The case takes him to a small village where he encounters the enigmatic and defiant Félicie, the victim's housekeeper, who holds the key to unraveling the mystery. As Maigret delves deeper into the lives and secrets of the villagers, he must navigate through layers of deception and intrigue to uncover the truth behind the murder, all while dealing with Félicie's unpredictable behavior and her own hidden motives.