Al Capone Al Capone is perhaps the best-known gangster of all time and by far the most powerful mob boss of his era. His mob dominated the Chicago area from 1925 to 1931, when he was imprisoned for income tax evasion. This was the only crime the courts could prove against him. He went to jail at Alcatraz for eight years until he became very ill with syphilis and died from the disease in 1947. Al Capone was …showed first 75 words of 867 total…

…showed last 75 words of 867 total…his release, he never returned to Chicago. He had become mentally incapable of returning to the "mob life." He spent the rest of his life in Palm Island mansion with his wife and immediate family, in a secluded atmosphere. In 1946, his physician and a Baltimore psychiatrist both concluded that Al Capone had the mental ability of a 12-year-old child. He died due to a stroke and pneumonia on January 25, 1947 because he was suffering from syphilis.