we begin with a woman named eileen foster, a former senior executive at countrywide financial, one of the epicenters of the crisis. >> do you believe that there are people at countrywide who belong behind bars? >> yes. >> do you want to give me their names? >> no. >> would you give their names to a grand jury if you were asked? >> yes. >> but eileen foster has never been asked, and never spoken to the justice department, even though she was countrywide's executive vice president in charge of fraud investigations. at the height of the housing bubble, countrywide financial was the largest mortgage lender in the country, and the loans it made were among the worst, a third ending up in foreclosure or default, many because of mortgage fraud. it was foster's job to monitor and investigate allegations of fraud against countrywide employees and make sure they were reported to the board of directors and the treasury department. >> how much fraud was there at countrywide? >> from what i saw, the types of things i saw, it was-- it appeared systemic. it wasn't just one individual or two or three