Judas, by Astrid Holleeder

Good lord – the sister of a gangster, who secretly records him and turns him in.

This is an incredible book, of an incredible life. It's a great portrait of sociopathy, and how a horrific person can narrate themselves as victim. (It's actually two such portraits, of her father and her brother). It's a great portrait of how a sociopath can threaten people while claiming to just be warning them, such that even with secret audio recordings it's hard to prove that he was responsible for multiple murders.

Honestly the author breezes through the book with so little self-pity that I didn't fully imagine how scary it all must have been, and how brave she is. (As always, a little corner of my brain is reminded again about how cowardly I myself have been in situations 10000x times less scary than hers).

Incidentally, the book is also a portrait of how effed-up the "justice system" is: I don't want to make comparisons, it's hard to say if an impersonal system mistreats her "as much as" her brother does, but the Dutch justice department does treat her like shit (e.g. raiding her home, holding her as a teenager without charge and without a lawyer, and later trying to prevent her becoming a lawyer), all because of a (literal) crime she didn't commit, that her brother did.