Debonair British actor Herbert Marshall starred as FBl secret agent Ken Thurston, 'the man who crosses the ocean as readily as you and I cross town; he is the man who fights today's war in his unique fashion, so that tomorrow's peace will make the world a neighborhood for all of us.' Leon Belasco played Mr. X's comedic sidekick, Pagan Zeldchmidt, who always turned up in remote parts of the world to assist Thurston. The Man Called X debuted over CBS July 10, 1944, moved to NBC in 1950 and continued through May 20, 1952. In 1956, Ziv Television adapted The Man Called X as a 39-episode syndicated series starring Barry Sullivan as Ken Thurston.2/29/48 'Storm Over the Alps'
3/7/48 'Passport to Danger'
2/3/51 'Pirate Submarine'
2/17/51 'Escape From North Korea'
3/17/51 'Student Riots at Leiden'
3/31/51 'The Missing Papers'
4/7/51 'Land Reclamation'
5/25/51 'Medicine Smuggling'
1/15/52 'Radio Freedom'
1/29/52 'Swindling Racket'
2/12/52 'Relief Supplies to Italy are Stolen'
2/26/52 'Venezuela Waterway Sabotage'