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

The movie's not perfect, but it sticks the landing of its message. It was engaging - thrilling at times - and I personally thought it was a great time.

While it is a pity that the story wasn't told with more visual finesse, this is trivial compared to our real-world problems. It takes a good movie to put that into perspective.

A film of deceptively outspoken contemporary relevance, this is cinema at its most alert, alarming and alive.