[it] is pure genre, but that is not to say that its genre is pure, given how deftly it ambiguates itself between being a story of ghostly vengeance and a tale of psychological breakdown, while leaving the disoriented viewer to call the difference.

A great disturbing film that builds tension and rewards you with some solid jump scares and haunting imagery. This film isn’t perfect and leaves some unanswered questions, but that doesn’t prevent it from having an effect.

A great, intense, twisted storyline... It has a little bit of everything.

The film builds up a suspense that turns into fear and uses practical and visual effects to great results.