La ragazza dei lillà (1986)

An honest and idealistic archaeologist, to find the legendary burial of an Etruscan king, collides with the interests of a group of "grave robbers". Larth is a passionate archaeologist of the Etruscan civilization, on the trail of a famous royal tomb. Vasco is a hotelier in the area which is enriched by plundering the graves and selling their treasures. Tania is the beautiful, thirteen year old, niece of Vasco (played by 18 yr old Brigitta Boccoli ) that disturbs the mature scholar Larth by attempting to seduce his wife Leonora. There is treasure, thievery, murder and seduction. Oh, and a red car.

Unfortunately the movie La ragazza dei lillà is not yet available on HBO Max.