If you mean "grown up" book it was "Papillon". I found it so enthralling, the prose in the first person and the style more like an oral narration, and knowing it's a real story! I guess I was always into stories about freedom. This could be included in a good bitcoiner bibliography.

But it you mean adult like most of you sickos read, it was "Los pecados de Inés de Hinojosa" which was good too. I read that one after watching the tv series with the 2 hottest actresses at the time 😆. The book is fine, but not like the tv series.