Owen Vincent "Owney" Madden was an English-American gangster who was a leading underworld figure in New York during Prohibition. Nicknamed "The Killer", he garnered a brutal reputation within street gangs and organized crime. He ran the Cotton Club in Manhattan and was a leading boxing promoter. After increased attention from law enforcement in New York, Madden moved to Hot Springs, Arkansas, in 1935, where he remained until his death from natural causes in 1965.