Family Lies 2.

Twisted family sexual encounters began with Camille blackmailing her dad with sexual favors. After being caught with her brother, Kate leaves for an appointment with her Grandfather the Dean. Kate's affair with her brother takes on an even bolder position after school and Camille watches them secretly while masturbating in the hallway. Finally overcome by lustful thoughts Camille confronts her sister in the bedroom and they explore each other's bodies.