The Sicilian mafia is probably the most famous criminal organisation in the world. It’s been known to exist at least since the 1870s, when a Sicilian landlord documented how a local group of mafia members threatened and harassed his business to the point that he had to escape from the island. Over the years, the Cosa Nostra and its North American offshoots have been depicted in numerous books, movies and works of popular culture. Yet the origins of the mafia have been regarded as something ...