Based on Ruth Rendell's Judgment in Stone, French auteur Claude Charbol transplanted this quintessentially English thriller about class and guilt to France, where he can fire more bullets at his favorite target - the French bourgeoisie. Without giving too much away, the story unfolds at a slow pace to reveal the class divisions and complex psychological issues that drive the characters' motivations. Centring on an illiterate maid, Sophie, who goes to desperate lengths to hide her "disability" from her employers, the wealthy Lelievre family, she eventually strikes a bond with the local postmistress who has mysterious grudge against her friend's employers. This film provided Chabrol with plenty of opportunities to criticize the disaffected bonhomie of the Levlievre family, but at times his presentation of some members of the Levlievres actually enlists our sympathy and therefore strikes a blow to the validity of his critique of French bourgeoisie values. Perhaps this was his intent to create more ambiguity than most psychological thrillers in this genre would allow. It's worth watching for the climax alone which has a delicious twist worthy of a mass-market Hollywood sequel.