CNN's Allan Chernoff reports.
Bernard Madoff is expected to plead guilty today to running the biggest investment fraud in history, which could send him to prison for the rest of his life.
He's charged with robbing investors of billions of dollars. For many of them - their entire life savings. But if Madoff thought pleading guilty would end the investigation... he thought wrong.
Right now federal investigators are ripping apart 25 years of fraud inside Madoff's firm to find out where all the money went.