Mistakenly, I believed I had read as much as I needed or wanted to read about Aum Shinrikyo by 2018, when Asahara Shōkō was executed as a result of the 1995 release of sarin gas in the Tokyo subway. Now, however, Dr Rin Ushiyama has taken the action forward by meticulously recording the varied and changing narratives of those affected, both directly and indirectly, by Aum's nefarious actions. Be they perpetrators, victims, officials, media, 'anti-cultists', scholars or intellectual commentators, each contributes to the collective memory and subsequent actions of a traumatised Japan. This is a story well worth telling - and, indubitably, well worth reading.