What happens
Jimmy Olsen and his Aunt Lou follow directions hidden in an old wallpaper pattern through the passages beneath Horn House, toward the sea. They reach a secret door, which the smugglers, led by Quinby, have just left, and find a chamber that opens only at the lowest tide. Inside they discover a chest of small packages, and their discovery brings them into danger as water begins to rise. Clark Kent is away from the house, while Superman searches for the missing pair.
Horn House and the tide-flooded galleries and secret chamber beneath it, on the coast
Characters: Jimmy Olsen, Aunt Lou, Quinby, Pete, Clark Kent, Superman, Tiger
Listen for: The secret door opening at low tide and the rising water, as Jimmy and Aunt Lou find the chest and are trapped
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.