William “Big Billy” D’Elia is Mafia royalty. The “adopted” son of legendary organized crime boss Russell Bufalino, for decades D’Elia had unequaled access to the man the FBI and US Justice Department considered one of the leading organized crime figures in the United States. But the government had no real idea as to the breadth of Bufalino’s power and influence—or that it was Bufalino, from his bucolic home base in Pittston, Pennsylvania, who reigned over the five families in New York and other organized crime families throughout the country. For nearly thirty years, D’Elia was at Bufalino’s side, and “Russ’s son” was a witness and participant to major historical events that have stymied law enforcement, perplexed journalists, and produced false and wild narratives in books and movies—not the least of which being the infamous disappearance of union boss Jimmy Hoffa.