Una ragazza piuttosto complicata (1968)

A middle-aged couple invites the man’s daughter into bed with them to add spark to their sex in the taboo sex drama Una Ragazza piuttosto complicata (1968). It’s an unorthodox decision to be sure, but the cad Alberto (Jean Sorel) is duly punished for his transgression, as lover Greta (Florinda Bolkan) and daughter Claudia (Catherine Spaak) lock the bedroom door on him. Unfortunately things end badly (watch out for Bolkan’s nude turn as a floating corpse), but for a little while everything’s just peachy, with Spaak cavorting naked in a number of thrilling scenes.