I'll start off by saying that this is a relatively slow paced film, there are lots of long scenes without dialogue and the usual things that happen in modern horror films are mostly set aside. There are a few scare scenes, but this is definitely not an in your face type of horror film. If you do not enjoy slow paced films then you will not like this.
With that said, I really enjoyed this, it was such a great surprise. I really had no idea what to expect when I turned it on but the beginning instantly hooked me. From there the film does a great job of creating a very realistic atmosphere, it makes the theme of the movie almost seem plausible because it presents it so well. The story is told in a very soothing and almost calm way, which makes the horror elements really jump out when they are introduced.
The acting was well done, the small cast all does a good & believable job. Everyone does kind of speak in the same mono toned fashion but when you consider how unhappy really everyone in the film is it makes sense for them to all be speaking that way.
Overall I thought this was great. It takes the cliché possession theme and does something new & interesting with it. It's not going to be for everybody, but if you go into it expecting a slow paced heavy atmosphere type film then you will most likely be pleased.
7/10