The book is simply fascinating, the way it drags us into the intricacies of the Mafia world. The separation of the chapters by the themes that raise us biggest curiosity, the diverse cultures and their influence in the own rules of each Mafiosi brotherhood. The rules, the punishments, the initiations, the religiosity of all of them, but mostly the light form as the author transports us through the hardness of these world it is extraordinary. The several oficial documents that he had to read, the travels that he had to make, the interviews with those who relied on him to allow an approximation. Fantastic.