A journalist wrongly accused of murder enlists the help of a femme fatale to track down the real killer.

This deftly made French psychological thriller terrifies with its exploration of an experiment gone horribly wrong. Dr. Marc Lacroix, a psychiatrist specializing in brain functions, is obsessed with the link between mind and spirit. To find his link he studies the criminally insane. He builds a secret machine, known only to his mistress Marianne, in which he hopes to exchange minds between humans. He simultaneously wants to help the mentally ill recover, and he wants to experience their madness. He chooses the psychotic killer, Zyto, a man who stabbed at least three women, for his experiment. The initial experiment is successful and the two exchange minds. But trouble ensues when Zyto refuses to reverse the switch. There is little Marc can do when Zyto takes over Marc's life, and more ominously his wife and child whom are unknowingly in mortal danger. Marc, encased in Zyto's body, is returned to the asylum. Will Marc's wife recognize the danger? Will Zyto kill again?

Léon, the top hit man in New York, has earned a rep as an effective "cleaner". But when his next-door neighbors are wiped out by a loose-cannon DEA agent, he becomes the unwilling custodian of 12-year-old Mathilda. Before long, Mathilda's thoughts turn to revenge, and she considers following in Léon's footsteps.

A robber escapes from prison with a single objective in mind: to track down his former cellmate, a serial killer who intends to pin his crimes on him. A cop is sent after the robber who, despite his best efforts, soon becomes Public Enemy Number One. As the protagonists are driven to their limits, it becomes increasingly unclear who is the hunter and who is the prey.

The story of the rise of Alexander Stravisky, a brilliant and seductive crook, in Paris of the roaring twenties. But unchecked greed and corruption does not go unpunished. The political decadence he feeds off will also cause his downfall.

The love story of Pascal and Hélène who meet at Françoise's birthday party and the love story of Gérard, Pascal's confidant, and Françoise who invited Pascal and Hélène to her birthday party.

Leo, an accomplished playboy, neglects his girlfriend and enjoys parties. His girlfriend parts from him and then, when he wants to see her once more, he suffers an accident. He survives, but his whole life is about to change when he becomes wheelchair-bound.