I read in the IMDb trivia that this film originally was meant as a knockoff of "The Exorcist" and it was re-edited in order, apparently, to avoid legal difficulties. However, in its final form it bears little similarity to "The Exorcist"...or a movie! Instead, it all seems very randomly edited and pointless. And, occasionally, nudity is tossed into the mix but it manages to be very unsexy and even rather silly.
The film begins with a hilariously bad choreographed dance scene that looks like it belongs in the John Travolta film "Staying Alive". Then, abruptly, the film switches to an annoying child (Daria) and her mother. It seems that years before the mother was part of a coven and now Daria is becoming a nasty little demonic child. Why? Who knows. All I know is that the actress acted really nasty through much of the film until she ultimately tore off all her clothes at the end--which is very disturbing since she was a pubescent girl--and too young legally to do such explicit stuff in the States. Perhaps Italian laws were more liberal. But this part, if it's possible, makes even LESS sense than the rest of the film and it ends.
To say that the film made little sense, was completely amateurish and was stupid would probably be a major understatement. The film is without merit--heck, even the nudity is pretty dull (except for those hoping to see some not-yet legal nudity). A despicable and dumb film with nothing to recommend it. Even for camp value it's pretty worthless.