La figliastra

La figliastra: Storia di corna e di passioni is a 1976 commedia sexy all'italiana film directed by Edoardo Mulargia. It features Bruno Scipioni with Austrian sexploitation star Sonja Jeannine.
In France, the film was released in an adult version with added hardcore scenes and under the title Veuves excitées.

Plot

The wife of the Sicilian barone Francesco 'Cocò' Laganà dies of heart failure while having sex with the lecherous gardener Fefè. Cocò marries a Northerner widow named Nadia, her beautiful teenage daughter Daniela later moving to her stepfather's house. Both Cocò and Fefè make sexual advances to Daniela but to no avail. Meanwhile Cocò's heirship to a large inheritance is in jeopardy because his late wife did not beget him a child and Nadia cannot get pregnant, the Sicilian customary law barring a man without offspring from heirship.