Instead, you get a movie that's enjoyable enough, but leaves you feeling like it could have been much, much more.

After playing with our expectations, this turns out to be a very different sort of film.

A great movie, one of the best of this year. There was a bit of confusion at one point in the plot, but nothing serious.

The film never slows down or bores, plunging from one harrowing sequence to the next.