[fjp]

I highly recommend the book The Good Mothers. Even if you think you know about the mafia, the scale that they are operating on will blow your mind. The Calabrian-based mob control a medium-to-large country's worth of the world's money.

[matthewaveryusa]

Gomorrah [1], the book, by Roberto Saviano is pretty good too.

[1] quick fun read on the origins of Sodom and Gomorrah https://en.wikipedia.org/wiki/Sodom_and_Gomorrah