O'Hara, U.S. Treasury was a Jack Webb/James E. Moser produced series about Special Agent Jim O'Hara (David Janssen) who took on cases of criminal activity committed against the U.S. Government. He did work for the IRS, U.S. Customs, the Bureau Of Alcohol, Tobacco and Firearms & even the U.S. Secret Service. It only lasted for 1 season on CBS.