Wealthy but arrogant writer Jean Hervey comes home one day to find that his wife, Gabrielle, has left him for another man. Realizing her mistake, Gabrielle returns, and the pair begin a merciless analysis of their marriage as the relationship comes undone.

The disappearance of a young woman puts two forensic police officers on the trail of a serial killer. Their fears are confirmed by the discovery of several corpses, what follows is a long hunt across Paris.