This movie has received many mixed reviews.. The main reason behind this is, that those expecting to watch a full on horror movie with gore etc. will get something a bit different. The movie is more of a thriller showing a troubled couple which have found themselves in a VERY difficult situation.
The idea for the movie is very original even if argued otherwise.. it keeps you guessing as to whats going to happen next and is generaly very well put together..
The only downside which i have to point out is the very rushed ending.. It was good however you cant help but think that they could have made it atleast 10mins longer.
Overall a very good movie with some great acting and good storyline.