It's interesting to see people giving this a one star rating based on their own personal belief. It's really nice if you're an atheist or Christian but setting that aside it's a competent documentary. Seemed pretty open minded to me. Friedkin's stand point seemed to be he felt there was something to it but wasn't 100% convinced. The music was a bit intrusive and framing during a couple of his monologues seemed careless. I don't know or care if extra processing was done on her voice. Other than those things it was interesting and helmed by an intelligent, rational guy. Giving it a 1 or even a 10 seems like a personal issue with the religious aspect rather than standing back and viewing objectively.