What happens
Commander Buzz Corey and Happy Hal Dolan of the Space Patrol are trapped in Borgenna Castle on Venus, held by the criminal Polodor, who is flooding the halls with poison gas. Earlier, Corey was asked by Secretary-General Carlisle to deliver sealed documents to his daughter Carol, who was then abducted during her flight to Jupiter. An anonymous informer led the Patrol to a moon of Jupiter, where Corey and Happy were overpowered by a mysterious masked figure. Now they search for a way out while the gas spreads, and they discover that the figure is actually a robot controlled by Polodor, which the men struggle to command.
Borgenna Castle, a deserted ruin in the Coronine mountains of Venus, and a rocky moon of Jupiter in the 25th century
Characters: Buzz Corey, Happy, Carol Carlisle, Polodor, Secretary-General Carlisle, Jedrow
Listen for: The robot's voice booming from the walls, and the gas-filled castle corridors where the Patrol searches for a way out
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.