Highly unusual, powerful and tragic horror film, which shows ignorance and superstitions of Italian province. A girl is believed to be possessed by the devil and the cause of the tragic events that occur in the small town where she lives. Israeli actress Daliah Lavi (who the same year plays in Mario Bava's "Whip and the Body") portrays young, ignorant country girl named Purificazione, who herself convinced that she is really responsible for all misfortunes. Director Rondi was acclaimed Italian screenwriter, who works with many great Italian directors, including Fellini, Rosselini, De Sica. "Il Demonio" was based on true facts.