What a freaking movie. So many twists and turns. Absolutely intense from start to finish.

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

A film of deceptively outspoken contemporary relevance, this is cinema at its most alert, alarming and alive.

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