A small-time thief steals a car and impulsively murders a motorcycle policeman. Wanted by the authorities, he attempts to persuade a girl to run away to Italy with him.

A wheelchair-bound photographer spies on his neighbors from his apartment window and becomes convinced one of them has committed murder.

The cruel and abusive headmaster of a boarding school, Michel Delassalle, is murdered by an unlikely duo -- his meek wife and the mistress he brazenly flaunts. The women become increasingly unhinged by a series of odd occurrences after Delassalle's corpse mysteriously disappears.

Senator Walter Chalmers is aiming to take down mob boss Pete Ross with the help of testimony from the criminal's hothead brother Johnny, who is in protective custody in San Francisco under the watch of police lieutenant Frank Bullitt. When a pair of mob hitmen enter the scene, Bullitt follows their trail through a maze of complications...

A self-assured businessman murders his employer, the husband of his mistress, which unintentionally provokes an ill-fated chain of events.