Henri-Georges Clouzot has often been compared to Hitchcock,
but even the master of suspense couldn't come up with some of the excruciating
twists that are in the French director's masterpiece Diabolique (1955). The mistress (Simone Signoret) and the
wife (Vera Clouzot, the director's spouse) of the headmaster of a miserable
boarding school agree that the guy is a pig and plot to do him in.