What happens
Buzz Corey and Cadet Happy travel to Mars to meet Tonga, an agent who has been investigating thefts of critical materials from factories in Lowell City. Tonga has found a clue, but when they reach the quiet science library, two men burst in, and one of them has Tonga's evidence. Corey and Happy learn that a drug is being used to make workers forget their actions. Later, trapped aboard a robot cargo ship full of stolen goods, they are carried off to an unknown destination. Space Patrol, the series, aired on 1953-03-21 and its lead actors are not named in the transcript.
Mars, at the city of Lowell City and its space port, then a robot cargo ship and a remote mine region on Venus
Characters: Buzz Corey, Cadet Happy, Tonga, Major Robertson, Dratcher, Wharton, Dr. Ryan, Major Blake
Listen for: The library meeting on Mars, where Corey and Happy are attacked and their evidence is taken
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.