It's hard to see any effort in the film. There's no comedy to speak of, no real drama and, worst of all.

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

It is both painfully honest and laugh-out-loud funny at the same time.

Just intense enough to provide a much-needed diversion, just lightweight enough to make you forget about it soon after it’s over. It’s not exactly “good,” per se, but it does what it sets out to do in terms of putting us on edge, which makes it … successful?