Dragnet episode 009 aired August 14, 1949 on NBC Radio. A small-time narcotics user named Benny Trounsel has been beaten to death shortly after tipping the cops to a new narcotics ring in town. Detective Sergeant Joe Friday has been assigned to narcotics detail. For many weeks  Doctors offices, hospitals, drug stores and drug suppliers have been burglarized for narcotics. The criminals are expert and it is Friday's job to get them.