Bill Lerach, a San Diego-based class-action attorney, was once known as "the knee-capper of corporate America." After winning $45 billion in fraud judgements against corporations like Enron, Citibank and Drexel-Burnham, in 2007, Lerach pleaded guilty to one federal conspiracy charge of obstruction of justice. He was sentenced to two years in prison and lost his license to practice law. He is the subject of the new book "Circle of Greed."