William Friedkin, director of the classic 1973 film The Exorcist, just screened his new documentary about a "real" exorcism conducted by Father Gabriele Amorth on behest of the Vatican’s Rome Diocese. Friedkin's film is titled "The Devil and Father Amorth." From an interview with Friedkin in Variety: What was the experience of witnessing a real exorcism so close up like? It was terrifying.