A Russian businessman arrived in New York in mid-2000, eager to export art to the United States. His counterpart in the deal, an American, appeared ready to do business, too. But neither man was exactly who they purported to be. Their encounter may have been just the break FBI mole hunters were looking for. Drop us a line: agentofbetrayal@cbsnews.comSee Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.