Pretty good movie overall. First half was nothing special but it got better as it went along.

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

All that we are seeing on the screen is happening with real people, real action sequences in the background, forcing the eye to watch as if we were there.

One of the worst ways to make a cult movie is to set out to make a cult movie.