What happens
Mrs. Gregory, Captain Bradford and Jerry Hall are held on the Isle of Euclidea, a strange island colony run by a mastermind who watches their every move. When Captain Bradford is confined in a cell and collapses after a choking attack, Jerry runs for help. The mastermind, known as G-47, explains the collapse as an accident involving a paralyzing ray. The captive group is allowed to move to their yacht, where Jerry, Tex and Mrs. Gregory begin to plan how to escape the island's surveillance. Joan, the long-lost daughter of Mrs. Gregory, is with them and may hold the key to their plan.
The Isle of Euclidea, a secretive scientific colony, including its cells, laboratories and a yacht anchored offshore
Characters: Mrs. Gregory, Captain Bradford, Jerry Hall, G-47, Joan
Listen for: G-47's explanation of the choking incident and the plan to smuggle shielding material aboard the yacht
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.