The movie focuses on complex and serious things like grief and how the horrific death of a loved one can have horrific consequences on the family. The film overall feels very real in scenes which is one of the reasons why it is so terrifying. As the film continues it starts to turn paranormal and get even more terrifying.
There is a few very frightening and realistic images that display death in close up shots. Sometimes the camera will be positioned in a dark room and a ghostly apparition can appear. Sometimes you don't see the apparition until the camera zooms in to where it is. This can be very frightening and creepy.