Classic thriller from director Henri-Georges Clouzot, following the events of a murder plot in a small French provincial school. Tired of being mistreated by abusive headmaster Michel Delasalle (Paul Meurisse), his frail wife, Christina (Vera Clouzot), and his mistress, Nicole (Simone Signoret), plot to kill their tormentor. When Michel’s body goes missing, however, the women soon realise their plan is not as straightforward as they first thought.