I was totally surprised at how great this film.You could feel your paranoia rise as the film went on and as you gradually learned the details of the real situation.

It's a mild crowd pleaser for people who are exhausted by blockbusters.

It is interesting even when nothing much happens, which is for most of its 3-hour running time. Read full review

I think this is a new genre that they're all sort of working their way through it and haven't got all the kinks worked out yet but it's a genre that works for me.