Simple and well acted, it has tension enough to knot the stomach.

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

I am only giving this movie a 1 for the great cast, though I can't imagine what any of them were thinking. This movie was horrible

A lot of perfectly good film show their cards early, establish a unique premise and let the audience explore a topic at a leisurely pace, without much in terms of surprise. this film is not one of those films.