 When Madoff was arrested in December 2008, about $68 billion in money his clients thought they had disappeared overnight. While serving his 150-year sentence, Madoff made about 50 phone calls and sent hundreds of emails to Behar. Behar's book is based on that correspondence and on interviews with Wall Street insiders, prosecutors, FBI agents, and people who lost most or all of their money, including Behar's Aunt Adele.