An alcoholic doctor accidentally kills someone and manages to make the death look like an accident. The episode triggers a sense of confidence and he resolves to correct the miseries of his life.

A plucky businesswoman agrees to receive love letters to a prefect’s wife from a young official, and soon finds herself embroiled in a scandal that inflames a town’s class tensions.

A series of crimes is being perpetrated around a famous singer. Strangely, during each of the crimes, the artist's voice is heard humming his favorite song. Suspicions lead to a chase through a nocturnal Paris, ending in a disused theater where the assassin has lured his final victim.