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

This is a must-see and one of the best documentaries - and films - of this year.

It's the kind of movie you'll want to see a second time with someone who hasn't seen it yet, to remember what it was like to watch it for the first time.

It's easily one of the freshest, sharpest and most enjoyable films of this year.