The Talking Clue

S3, E2: Police Inspector Henderson's son, Ray, has an unusual hobby: collecting all sorts of noises and sounds on his tape recording machine. Ray's hobby sets off an exciting sequence of events in, "The Talking Clue." By accident young Ray's recorder picks up the sounds of Inspector Henderson's office safe being opened and two crooks, Muscles McGurk and Claude James, are able to use this sound recording to their advantage. The vault subsequently yields data which enable McGurk and James to disconnect burglar alarms and commit robberies undetected. When Ray becomes their unwitting dupe and accessory, it appears he has double crossed his father and sold out to the underworld. However, through clever use of the sound machine and some quick thinking by Clark Kent, Superman is able to locate the hideout and foil McGurk's scheme.