i'm leslie stahl. in march 2009, bernard madoff pleaded guilty to perpetrating what's believed to be the largest financial fraud in history. he received the maximum sentence for his crime, 150 years in prison. but while madoff is behind bars, there's still much we don't know about the scam which involved, by some accounts, a fraud of more than $50 billion. investigators are still trying to figure out who was involved and where the money went. this edition features some of the people most intimately familiar with madoff's schemes: irving picard, the court-appointed trustee charged with finding the missing money, some of the crooked financier's victims and the man who figured out madoff's crimes out before anyone else, harry markopolos. plus, morley safer examines why, even today, investors are so susceptible to con men. we begin with markopolos. at the beginning of 2009, he sat down with steve kroft for his first television interview. >> kroft: until the end of 2008, harry markopolos was an obscure fina

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i'm leslie stahl. thank you for joining us.aptionmax www.captionmax.com program contains mature sexual content. viewer discretion is advised. this is a cnbc original production. >> woman: it's here, and people wanna see it. >> man #1: i think that people enjoy seeing sex a lot. >> man #2: i was fully addicted to the material. >> woman: i had a business drive-- like, i wanted it. i wanted to be a sex symbol. i always have. >> man #3: we made hardcore into hard to believe core. >> woman: when i was miss usa, i had certain responsibilities to uphold, and i did that. why, if people can get it free, why pay for it? >> man: the first thing we need to do is combat piracy. >> woman: it really actually turns me on that people watch me. >> female audience is the largest growing demographic, by far. >> man: i was acting out sexually, even in spite of

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and when he finished talking to leslie stahl, he would call the pentagon and explain what he was doing, trying, i think the phrase he used was -- [inaudible]. a commercial. don't focus. anyway, i got off the train watching history being made, the fear that we all had as americans, a new fear was being given a face. and that face was the face of saddam hussein. not to say islam. when we got off the train i got on the subway to go to nyu. the subway was empty because it went under the former twin towers. so there were only two other people on the subway with me, and one was a welder who is going to the cleanup site, no longer rescue site by the cleanup site, and the other one was a friend of his. and they were talking about why this had happened. so they were engaged in the process of trying to give it a face as well. the destinations they had were it's because of the jews. it's the jews agreed that turned new york into a symbol of capitalism. that's why they hate us but it's because the jews killed christ that they hate us, these kinds of explanation. i was a little stunned at hearing e

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. >> i'm leslie stahl. >> i'm morley safer. >> i'm bob simon. >> i'm lara logan. >> i'm scott pelley.hose stories tonight on "60 minutes." i am an american success story. i'm a teacher. i'm a firefighter. i'm a carpenter. i'm an accountant. a mechanical engineer. and i shop at walmart. truth is, over sixty percent of america shops at walmart every month. i find what i need, at a great price. and the money i save goes to important things. braces for my daughter. a little something for my son's college fund. when people look at me, i hope they see someone building a better life. vo: living better: that's the real walmart. i'm very excited about making the shrimp and lobster pot pie. we've never cooked anything like this before. [ male announcer ] introducing red lobster's seaside mix & match. combine any 2 of 7 exciting choices on one plate for just $12.99! like new cheddar bay shrimp & lobster pot pie, and new parmesan crunch shrimp. plus salad and unlimited cheddar bay biscuits. combine any 2 for just $12.99. [ stewart ] for the seaside mix & match, we're really mixing it up. there's