This document summarizes information about three prominent crime figures from the 1930s: Al Capone, Johnny "the Fox" Torrio, and Frank Costello. It provides basic biographical details and what each was known for in the criminal underworld. Capone ran bootlegging and gambling rackets in Chicago. Torrio helped build the Chicago criminal organization before passing leadership to Capone. Costello controlled a large gambling empire in New York and helped prevent sabotage on the waterfront.