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

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

I really wanted to like this movie. I feel terribly cynical trashing it, and that's why I'm giving it a middling 5. Actually, I'm giving it a 5 because there were some superb performances.

Tells a fascinating and unsettling true story, and does so well, without pretending to have all the answers.