There is just so much movie here. For some it may be too much. But in the same secretly sarcastic way most telemarketers say the phrase, the title of this one is particularly apt.

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

One of the film's great tricks is that, for a time, you think it will go down a rabbit hole of unrealistic glorification.

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