From the 1001 canon

Diabolique (1955)

Directed by Henri-Georges Clouzot · 1h 58m · Mystery

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.

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