The Man Called X is an espionage radio drama that aired on CBS and NBC from July 10, 1944, to May 20, 1952. The radio series was later adapted for television and was broadcast for one season, 1956–1957.
Herbert Marshall had the lead role of agent Ken Thurston/"Mr. X", an American intelligence agent[2] who took on dangerous cases in a variety of exotic locations. Leon Belasco played Mr. X's comedic sidekick, Pegon Zellschmidt, who always turned up in remote parts of the world because he had a "cousin" there. Zellschmidt annoyed and helped Mr. X.Jack Latham was an announcer for the program, and Wendell Niles was the announcer from 1947 to 1948.
Orchestras led by Milton Charles, Johnny Green, Felix Mills,[2] and Gordon Jenkins supplied the background music. William N. Robson was the producer and director. Stephen Longstreet was the writer.