Sinners who art on earth, behold the masterpiece of horror! I can’t resist to make a philosophical reading of the film, helped on by Foucault. If the most evident level of dread stems from the possession of a sweet young girl by an ancient demon, another less obvious layer is much more significant. The movie starts by showing the child as bright, blooming, active - at most shaken up by her parents' recent divorce. As the doctors get more and more hold of her, kicking off with medication then moving forward with invasive, shocking tests & treatments, she gradually loses her self. As such, it's the cold, instrumental, dehumanizing gaze of the medical institution that is the most terrifying.