Giochi Erotici di una Famiglia per Bene

Rare 1975 giallo, also known as "Thrilling Story," directed by Francesco degli Espinosa (Enzo Matassi) and written by Renato Polselli.

A well-known detractor of divorce, Riccardo, returns home one evening to catch his adulterous wife, Elisa (Malisa Longo) with her lover, who manages to escape through the window unseen. Riccardo, determined on revenge, drugs his wife while making love, stuffs the body in a sack and dumps it in the lake. As the sack catches on the embankment, he is nearly spotted by a passer-by.

Later, Riccardo meets a young woman, Eva (Erica Blanc) and they become lovers. One day, Barbara (Maria D'Incoronato), Riccardo's 16-year old niece turns up asking for her aunt Elisa. She is told that Elisa is away on a cruise, but the young girl seems unconvinced. Then the telephone rings, and it is Barbara who manages to pick it up. A stunned Riccardo listens as the girl seems to be having a conversation with his murdered wife. Disturbed, Riccardo confides to Eva that he has been having hallucinations about Elisa and soon afterwards, apparently overwrought, he commits suicide.

Then Elisa turns up alive and well and joins Eva, who was none other than the lover narrowly escaping Riccardo at the beginning. Obviously it wasn't Elisa's body that got dumped either. Certain now to have Riccardo's wealth without his fastidious presence, the two women abandon themselves in a bout of lovemaking. But then Riccardo appears, also very much alive, in the doorway with young Barbara, who in turn has been Riccardo's lover and accomplice.

Two swift shots of a gun and the lesbian lovers are now two more sacks on the road to the lake. As they drive to the cliffs overlooking the lake, Riccardo starts to feel drowsy and stops the car. Not surprisingly, he falls asleep, drugged by the double-crossing young girl. She sets the car in motion towards the edge of the cliffs. But before she will find herself in sole possession of Riccardo's money, there is one more twist to be played out...

Images and synopsis from Continental Film Review.