What happens
Clark Kent, Jimmy Olsen and Pud Flanagan are aboard a ship sailing from Panama to the United States when Kent receives a warning note reading 'Beware' at breakfast. He confronts Captain Ostero, who will not explain the warnings or the ship's cargo. Pud grows suspicious of Kent and the passengers, and he and Jimmy sneak down into the cargo hold to investigate. Once inside, they discover the door has been locked behind them and they are trapped among the sacks of sugar, with Pud pinned under a load and Jimmy calling for help. The episode is part four of the Superman serial, which first aired on April 28, 1941.
A passenger ship sailing from Panama to the United States, including its dining room, deck and cargo hold
Characters: Clark Kent, Jimmy Olsen, Pud Flanagan, Captain Ostero
Listen for: The locked cargo hold and the boys' cries for help at the close of the episode
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.