Christina Delassalle, trapped in a toxic marriage with the brutal Michel, finds solace in plotting his demise with her colleague Nicole Horner, a former lover of Michel's. But their plan is complicated when Christina, dealing with a serious health issue, crosses paths with a retired police inspector who becomes suspicious of the case and decides to investigate.
Diabolique
A deadly web of deceit is spun as the principal's wife and mistress orchestrate a seemingly foolproof plan to get rid of him, cleverly crafting an airtight alibi to cover their tracks.
