Meet infamous gangsters like Al Capone, Bugs Moran, and Salvatore Maranzano, and discover how immigrant gangs and political machines like Tammany Hall shaped organized crime in the United States.

Salvatore Maranzano organised the Italian-American mob into five families: the Maranzano, Profaci, Mangano, Luciano and Gagliano. He then declared himself “the boss of all bosses”.