Diavolo in corpo

An Italian high school student named Andrea becomes infatuated with Giulia, an older woman he sees outside his classroom window. Giulia's fiance, a leftist radical, has been jailed and is currently on trial for political crimes. Andrea and Giulia meet, and begin rendezvousing at her apartment, where a sexual relationship quickly unfolds. The situation is complicated when the fiance's mother becomes suspicious. Andrea's father (who also happens to be the woman's psychiatrist) finally intervenes.