Former FBI agent Terry Hake officially served seven years with the FBI. However, his service to the Bureau, the Department 0f Justice, and other federal law enforcement agencies actually spanned more than 23 years. In this episode of FBI Retired Case File Review, Terry is interviewed about working undercover as a crooked defense attorney in the largest public corruption investigation in America. When the investigation—code named Operation Greylord—was initiated, Terry was a young Assistant State's Attorney fed up with corruption in the Cook County, Illinois court system. He wore a wire for three-and-a-half years fully aware that he could have been jeopardizing his reputation and law career in doing so. At the conclusion of the undercover operation, Terry testified in 23 trials over the next 10 years and eighty-three judges, lawyers, court personnel and policeman were convicted for accepting bribes to fix court cases.