Malicious (1973) aka Malizia
1973A widower’s son torments his future stepmother (their housekeeper) by making her do sexual things in exchange for his approval of her marriage to his dad.
Actors: Tina Aumont
The Game Is Over (1966) aka La curée
1966Renee Saccard is a pampered, selfish young wife of a middle-aged Parisian businessman who falls in love with her stepson but is driven to the point of madness when her husband tricks the stepson into betraying her.