'The top executives from Enron, WorldComm, and ADM — we went to jail for narcissism.' Mark Whitacre was the FBI informant in one of the biggest price-fixing cases in US history, against global food conglomerate Archer Daniels Midland. While undercover, he was convicted for embezzlement, lost his whistleblower immunity, and spent almost a decade in federal prison. Whitacre is played by Matt Damon in the film The Informant!, and today, spreads his story of redemption and second chances.