Bernie Madoff, Clark Rockefeller, Frank Abagnale, Charles Ponzi: All con artists able to deceive a lot of people out of a lot of money. We often look at the people who fall for these cons as gullible or weak or stupidly greedy, and at the con artists as cunning and manipulative psychopaths. The reality, however, is more complicated. Madeleine speaks to the author of a new book about what makes cons so seductive.