In 1933, with Capone behind bars for income tax evasion, the chief investigator for the State Attorney's office described Murray Humphreys as "'public enemy No. 1' and 'the czar of business rackets in Chicago.'" Later that same year, Humphreys was indicted for income tax evasion himself. On the run for 18 months, he finally gave himself up near Whiting, Indiana and entered a plea of guilty. Sentenced by a federal judge to 18 months in Leavenworth Prison, Humphreys wound up serving only 13 months of his sentence.