One of the most tense, gripping, engaging and clever films I have seen in a while

Rating: 9/10 (20 March 2016)

I loved the trailer to this movie when I saw it and was incredibly pumped and I just got back from seeing it and it was incredible, a part from the ending, which I will get into, it doesn't ruin the movie but it was a bit disappointing.
The acting from everyone was great, they really made you believe they were these people and were in this situation. The characters were engaging and the chemistry between the three actors was very good.
The score was also superb and it really added to the tense atmosphere. The first 20 minutes or so is mostly score, and when it stops it really makes the silence in the film more impactful and added to the tension. The story is intriguing and you don't know what is going to happen next. It is never boring and is paced really well. At each major plot point the film just gets more and more interesting.
And the cinematography is rather good. Especially at the beginning of the film, the camera moves around Mary Elizabeth Winsteads room and it focuses on certain objects and her facial expressions, this tells you visually what is going on in her life, there is no need for dialogue and it was very well done.
Overall it's a very engaging, tense, unpredictable and clever movie that is now one of my favourite movies of all time, I love movies like this. Films that have an interesting plot and have incredibly engaging characters. And I love tense movies as well, they are the films that get me the most emotionally involved and this film certainly gets me involved.
The only problem with it, is the ending.