It's Not Personal, Sonny. It's strictly business: "Codes of the Underworld: How Criminals Communicate" by Diego Gambetta.

The Boston Globe interviews Diego Gambetta, author of the new book Codes of the Underworld: How Criminals Communicate (Princeton University Press). Gambetta is a Professor of Sociology and Official Fellow at Nuffield College, University of Oxford. His book, according to the Globe, "offers insight on how mobsters, pedophiles, prisoners, and other shady characters earn one another’s trust and prove their mettle. And what he documents is both disturbing and, sometimes, hilarious."

Perhaps reading this book is an offer that you cannot refuse. And remember: Never take sides against the family again, ever...