What happens
Jerry Hall and Joan ride aboard the Euclidean submarine, a large craft commanded by a Euclidean woman, as it moves beneath the ocean away from the magic island. Jerry is uneasy about the boat and its crew, and Joan warns him that the Euclidean commander and her engineer show no mercy to anyone who crosses them. Jerry realizes that a battle fleet is passing overhead and that he has no way to contact it. The commander then orders Jerry to send a radio message to Johnson, pressing him to come to the island at once. Back at the island, Tex and Pat listen to the exchange and worry about the danger to their friends.
The Euclidean submarine beneath the ocean near the magic island, and the radio cabin on the island.
Characters: Jerry Hall, Joan, Johnson, Tex, Pat, G47, Captain Bradford
Listen for: The tense radio exchange in which Jerry must send a message to Johnson while the commander holds a ray gun on him, and Tex and Pat's reaction as the water breaks into the island.
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.