What happens
Ken Thurston, the international troubleshooter known as the Man Called X, travels to Santiago, Chile, to look into the disappearance of geologist Dr. Stuart Dawson, lost at sea while on the Archimedes expedition to Antarctica. Starring Herbert Marshall, The Man Called X is a radio drama from 1947, first aired on April 3 of that year. In Santiago, Ken is drawn into the circle of Margarita Avila, a wealthy widow whose reception brings him together with the expedition's scientists. He suspects that the expedition's interest is not purely scientific, and the question of why Dawson died remains open as the voyage begins.
Santiago and Valparaiso, Chile, and the Pacific voyage of the SS Archimedes toward Antarctica
Characters: Ken Thurston, Pagan, Margarita Avila, Professor Cedor, Dr. Florio, Professor Zellesmit, Dr. Stuart Dawson, Chief
Listen for: Ken's growing suspicion of the expedition's scientists and the tension between him and Margarita at the reception
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.