David Harding, Counterspy is a 1950 American crime film noir directed by Ray Nazarro and starring Willard Parker, based on the radio series Counterspy.
Howard St. John reprised his role as David Harding in Counterspy Meets Scotland Yard (1950).
An American spy is killed under suspicious circumstances in the United States during World War II. His friend Jerry Baldwin, a naval commander, is assigned to replace him and stop a saboteur at a torpedo factory, building them for the United States Navy. The story is told in a flashback story to illustrate how counter-espionage works.