What happens
Clark Kent and Jimmy Olsen search a stone house on Dead Man's Island after a mysterious woman, Ilana, insists they leave and a man's cry for help echoes from below. Beneath the house they find a tunnel with a brook and a hidden stone door, and they discover a turtle carrying a plea for help. Inside the tunnel they free a weakened captive, Carl Edwards, an electrician who explains how he came to be held on the island. The episode ends on a note of menace as footsteps approach down the tunnel.
Dead Man's Island, a stone house with a cellar and a hidden tunnel
Characters: Clark Kent, Jimmy Olsen, Ilana, Carl Edwards, Forest
Listen for: The turtle with the message on its back, the stone door, and the approaching footsteps at the end
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.