 This is Fresh Air. I'm Terry Gross. Let's get back to my interview with Richard Behar, author of the new book, The Final Word. It's about Bernie Madoff, the man behind the biggest financial Ponzi scheme in history. As part of his investment firm, he served as an investment advisor with a wealthy clientele that included celebrities, colleges, and philanthropic organizations. The stocks they invested in were just phony documents, and the profits they thought they'd made didn't exist either.