>> kroft: in the end, harry markopolos had been right about bernie madoff. he will be going to prison, but not because of anything that harry or the sec did. in a bad economy, madoff's lies simply collapsed under their own weight. >> no one was investigating mr. madoff at the end. >> kroft: so he turned himself in before anybody in a position of authority began a serious investigation? >> that's typically how the sec does it. they come in after the crime has been committed, they toe-tag the victims, count the bodies, and try to figure out who the crooks were after the fact, which does none of us any good. >> stahl: the mastermind of the ponzi scheme of all ponzi schemes, bernard madoff, may be in prison, but he is hardly forgotten. his untidy little business that bilked thousands of people out of billions of dollars is no more, but the big question, "where did all the money go?" remains unanswered. irving picard is the court-appointed trustee assigned to find that money and return as much of it as possible to madoff's investors. it's a daunting and thankless