Thérèse

Therese (Audrey Tautou) endures an unhappy marriage of convenience to an arrogant landowning neighbour. Her best friend, Anne, begins a passionate affair with a local man who is regarded by her family as unacceptable as he is not from such wealthy stock. When Therese learns that her husband's medicine contains arsenic she deliberately gives him overdoses that bring him close to death. Her life eventually deteriorates to the point where she commits suicide.

Not a particularly engaging film. It was difficult to sympathise with the main character and it would have made more sense for the film to focus on Therese's best friend whose affair had been undermined.