Diabolique (1955)

In the quaint labyrinth of a French provincial town, the ominous shadow of Michel Delassalle, a ruthless headmaster, looms over a school owned by his timid wife, Christina. This frail woman, with a heart as delicate as a glass figurine, is forced to endure her husband's cruel antics while he brazenly conducts an affair with Nicole Horner, a fiery and assertive teacher. Nicole, however, is not immune to Michel's sadistic charm; she too has been on the receiving end of his torment since the day she stepped into his world. Drawn together by their shared suffering, the women forge a covert alliance against their common adversary. They meticulously orchestrate a plan, as intricate as a spider's web, to free themselves from the stranglehold of their shared tormentor. The plot thickens as they lure Michel away from the school's austere confines, ensnaring him in Nicole's modest lodgings. With the precision of a surgeon, they sedate him with spiked whiskey, and in a chilling climax, drown him in a bath, their hearts pounding against the silence. Under the cover of the inky night, they swaddle the body in a nylon tablecloth, cram it into a laundry basket, and covertly transport it back to the school. Their plan reaches its crescendo as they deposit the body into the grimy waters of the school swimming pool. Yet, when the pool is finally drained, under the anxious gaze of the conspiring women, the corpse has vanished into thin air. This eerie disappearance is only the beginning of a series of spine-chilling events that unravel, slowly gnawing at the sanity of the 'killers'. Sightings of the supposedly deceased headmaster begin to surface, spiraling the plot into a vortex of unbearable suspense. This tale of Diabolique delivers a cocktail of intrigue, terror, and suspense that will leave audiences on the edge of their seats, gasping for breath.

Diabolique is a drama movie featuring Simone Signoret and directed by Henri-Georges Clouzot.

Diabolique is currently streaming for free (ad-supported) on Plex, Plex Player and The Roku Channel and it's also available on Criterion Channel, Max and Max Amazon Channel.

It is also possible to buy Diabolique on Amazon Video.