Part two of two. In Philadelphia, the broadcaster explores one of the bloodiest periods in the American Mafia's long history, as he sits down with former crime boss Ralph Natale. In a revealing interview, the ex-godfather spells out just how ruthless he had to be to control the men under him. In New Jersey, Trevor seeks out one-time cop Ron Previte, who led a double life as a high-ranking gangster and paid FBI informant, earning over $1million for his role in convicting more than 50 members of the Philadelphia Mob and their associates.