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Mobster Sam Giancana runs the Chicago Outfit in the 1950s and 1960s, and associates with Frank Sinatra, the Kennedys and the CIA.
Imprisoned mobster Charles "Lucky" Luciano makes a deal with the U.S., government during World War II.
Mobster Vito Genovese rises to prominence in the Mafia and ruthlessly deals with disloyal members of the organization.
Roy DeMeo, a member of the Gambino crime family, leads a crew that murders and dismembers dozens of people.
Meyer Lansky was an associate of mobster Charles "Lucky" Luciano and linked to criminal financial operations, but the FBI struggled to pin anything on him.