Rear Window meets Estate violenta. The middle-aged Constance watches a young couple that lives across the courtyard; the girl plays loud pop music and goes out of her way to be unpleasant to the classically educated and piano-playing Constance. Then one day Constance sees the boyfriend strangle the little tart in a fit of jealousy. He sees her, too, and has nobody else to turn to for help. Constance keeps silent about the murder and offers the young Hugo a place in her bed. Then the blackmail notes start to arrive...
Far from being a masterpiece, this is not unamusing at times, despite (or because of) some hilariously wooden acting from Michèle Morgan, who sleepwalks through the film. A special title card at the end requests that viewers do not reveal the ending - same as in Les diaboliques.
http://www.filesonic.com/file/41100135/Constance aux enfers.avi