I'm listening to the audiobook version of this. I saw that it was about the Aum Shinrikyo terrorist attack in Tokyo and thought it would be a detailed analysis of the cult and their motivations. It's actually (so far) a set of transcribed interviews from victims and survivors of the attacks.

To say that it's heavy on the heart is an understatement. It's told in a dry, unembellished way that makes it easy to empathize with the people who are relating their experiences.