Arthur Blessard was an auditor with the Internal Revenue Service who moonlighted as a serial rapist-murderer for eighteen years. After a gruesome career that lasted from 1983 to 2001 and stretched from New York City to Chicago to Atlanta to Pittsburgh to Hartford and back again, he was finally arrested by Detectives John Hawkins and Elliot Stabler after claiming 21 victims. (SVU: "Redemption")