The Criminal Investigation unit of the Internal Revenue Service has 20 field offices located across the U.S. and 11 attaché posts abroad. According to IRS-CI chief Jim Lee, the top 10 cases of 2021 have all the makings of a made for TV movie — embezzlement of funds from a nonprofit, a family fraud ring that stole millions in COVID-relief funds and a $1 billion Ponzi scheme used to buy sports teams and luxury vehicles. See the gallery for IRS-CI’s top 10 malefactors of 2021.