Horror films have a habit of following a formula and recycling it until another film comes and charts a new course. Haunted homes, demonic possessions and other similar tropes have littered the landscape of the genre since a while. That way, Ari Aster’s directorial debut 'Hereditary' is truly an original that moves slowly yet completely and totally terrifies you when you least expect it to. A stylistically brilliant film, 'Hereditary' cleverly makes you suspect that it could just be a psychological thriller and not an out-and-out horror, until the supernatural takes hold and completely scares you.