As somebody who had not heard any of this before, it became a curious phenomenon to sit and watch a film and slowly have the realities begin to click into place.

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.

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.