What happens
Clark Kent, Perry White, Jimmy Olsen and the secret serviceman Lewis are led to the hideout of Dr. Deutsch's espionage gang on Volcano Island. Lewis, who had been posing as an ally, takes White and Jimmy prisoner inside the volcano, and Deutsch threatens to flood their cell with seawater. Kent finds himself a captive as well, and he confronts Deutsch over a device that could destroy a city if his master plan succeeds. The episode is part twelve of The Adventures of Superman, a radio series, and this installment was first broadcast on June 20, 1941. The main lead performers are not named in the transcript.
Volcano Island, an extinct volcano honeycombed with tunnels, and the rocky shore below it
Characters: Clark Kent, Perry White, Jimmy Olsen, Lewis, Dr. Deutsch, Max, Hans
Listen for: Deutsch's explanation of his radium weapon and the threat to flood the cell block
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.