Counterspy was an espionage drama radio series that aired on the NBC Blue Network and Mutual from May 18, 1942 to November 29, 1957. David Harding was the chief of the United States Counterspies, a unit engaged during World War II in counterintelligence against Japan's Black Dragon and Germany's Gestapo. United States Counterspies was a fictional government agency devised by the program's creator, Phillips H. Lord after Lord "had a certain amount of difficulty with J. Edgar Hoover over story content in Gang Busters." Mandel Kramer played Peters, Harding's assistant.