Trevor arrives in New York to meet John Alite, a former multimillionaire drug dealer who doubled as one of the most ruthless Mafia killers in modern times. On a walk down the streets that were once his domain, John tells Trevor what it is like to shoot a Mafia rival in cold blood.

In Philadelphia, Trevor explores one of the bloodiest periods in the long history of the Mob, sitting down with Ralph Natale, the first Mafia Godfather to ever speak on television. In an extraordinary interview, Natale spells out to Trevor just how ruthless a boss must be to control the men under him.