Illicit Intimacy(1997)

Original title: Ritratto di famiglia

The young private tutor Paolo is summoned to the baron's estate. Baroness Christina falls head over heels in love with the handsome professor. What Christina doesn't know is that her wicked stepmother Amalia also has her eye on the young man. Addicted to lust, Amalia plays her deadly game to destroy their happiness. But the story takes an unexpected turn...