Mafia thrillers drag the reader into the secret underworld of organized crime. Certainly, the most well-known organized crime structure is the Italian Mafia - including its American offspring. But there are many others, such as the Calabrian 'Ndrangheta crime syndicate, the Japanese Yakuza, the Chinese Triads or the Columbian drug trafficking cartels - most notably the Medellin Cartel.
The gold standard in Mafia thrillers is probably Mario Puzo’s "The Godfather" which narrates the epic tale of the Corleone family – a story of crime, passion, loyalty, betrayal, and the American dream. More on Wikipedia