What happens
Clark Kent and Inspector Henderson search for Professor Sturgeon, a scientist who has been abducted after receiving a strange telegram. Their trail leads from a deserted mountain lodge to Richard Garrett, its owner, who has gone to Shanghai. Meanwhile, Lois Lane and Horatio F. Horn, an amateur detective, investigate a warehouse lot in Metropolis where they find fresh tire tracks running into a brick wall. Stepping inside, they discover a hidden panel and enter a dark warehouse, where three armed men confront them. The episode is part of The Adventures of Superman, a radio series first broadcast on July 8, 1946.
Metropolis and the Blue Mountains, with a trip to Shanghai, China
Characters: Clark Kent, Inspector Henderson, Lois Lane, Horatio F. Horn, Professor Sturgeon, Richard Garrett, Mr. Bailey
Listen for: The tire tracks that run into the brick wall and the panel that opens in it, which lead Lois and Horatio into the warehouse
Written from the episode itself; it never gives away the ending. Every recording is remastered for the stream: cleaned of rumble, hiss and mains hum (and the old TV whine where we found it), then levelled in two passes to steady broadcast loudness, so one show is never quieter than the next.