What happens
Ken Thurston, a government agent working for a bureau chief, is sent to investigate after cryptography expert Bill Pringle vanishes from his home in Alexandria, Virginia, following a deadly shooting. Pringle had been helping develop an electronic deciphering machine, and the army suspects he was in contact with foreign agents. Thurston meets a woman claiming to be Pringle's wife, then follows a flight clue to San Marino, California, where a pilot named Zell Schmitt is waiting for him. The Man Called X is a radio drama series starring Herbert Marshall, and this episode first aired on NBC on November 25, 1950.
Alexandria, Virginia, and San Marino, California, with a tuna boat off the coast of Lower California
Characters: Ken Thurston, Bill Pringle, Colonel Blake, Felice Pringle, Zell Schmitt, Tony Fisherman, Captain Braga, Pagan
Listen for: The Colonel's description of the electronic deciphering machine and the first meeting with the woman who calls herself Felice Pringle
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.