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Twin brothers Ronald "Ronnie" Kray and Reginald "Reggie" Kray were English gangsters who were the foremost perpetrators of organized crime in the East End of London during the 1950s and 60s. With their gang, "The Firm", the Krays were involved in armed robberies, arson, protection rackets, assaults, and the murders of Jack "The Hat" McVitie and George Cornell. When Inspector Leonard "Nipper" Read of Scotland Yard was promoted to the Murder Squad, his first assignment was to bring down the Kray twins. Which he eventually did.