Boy, this is just tough audience! 78% on rotten tomatoes. Maybe people are so used to Overkill, they cannot identify nuanced understated horror when it's put in front of them. As Marsha Mason tries to maintain a sane world for her child and her cell, reality itself begins to collapse. Suddenly and to exit inexorably, the kind of thinking that up until then, identifie The supremely competent upper middle class woman, is confronted with superstitious nonsense, an becomes the only possible cause and cure. An exorcism, medieval in origin and older, designed to bring an evil demon out of Innocents body. It scared to be Jesus out of me. Of course, Linda Blair deserved simultaneous Oscars one for each tortured soul inhabiting her body that night.