Eliot Ness (April 19, 1903 – May 16, 1957) was an American Prohibition agent known for his efforts to bring down Al Capone and enforce Prohibition in Chicago. He was the leader of a team of law enforcement agents, nicknamed The Untouchables. His co-authorship of an autobiography, The Untouchables, which was released shortly after his death, launched several television and motion picture portrayals establishing Ness's posthumous fame as an incorruptible crime fighter.