This is another one of those fake documentary style movies. In 1989 a woman killed 2 priests and a nun during an exorcism. 20 years later, her daughter wants to make a documentary about what happened. So she takes a filmmaker with her to Rome where her mother is being held in an insane asylum.
The usual possession stuff happens, and nothing scary happens. The movie made me jump a few times, but startling someone is easy. The movie is more unintentionally funny than scary. I think I was generous giving the movie 2 stars. Don't waste your time.