The Screen Guild Theatre (at least 16 appearances), The Jell-O Program (three appearances, including one as host), The Burns and Allen Show (two appearances), Birds Eye Open House, The Pepsodent Show and Hollywood Star Time (taking over as host in October 1946). He made radio history in July 1940 as the narrator of "The Lodger", the first audition show of the Suspense series (making 20 appearances on the program). His most famous role was as globetrotting intelligence agent Ken Thurston in The Man Called 'X' (1944–52). The series, first aired on CBS as a summer replacement for the Lux Radio Theatre, introduced Thurston as an employee of an agency known only as "The Bureau". His boss, dubbed "The Chief", tasked him with dealing with some of the world's most hardened, sophisticated criminals, including smugglers, murderers, black marketeers, saboteurs, kidnappers, various types of thieves, corrupt politicians and rogue scientists. Thurston's sidekick/nemesis Egon Zellschmidt was played by character actor Hans Conried during the first season. From 1945 to 1952, Russian comic and musician Leon Belasco appeared in the same role as Pegon Zellschmidt. The show was broadcast not only for the sake of entertainment but it also "alerted an anxious war-weary world to the inherent dangers of resting on its laurels during the brief peace after war." Work with amputees Using his own money for travel, Marshall visited many military hospitals during the war. In particular, he focused on encouraging soldiers with amputations to keep a positive attitude and not to think of themselves as handicapped or limited. Despite his usual reluctance to discuss his own injury, he talked freely about his personal experiences in order to give these amputees tips on how to use and adjust to their new artificial limbs. Although mostly kept private, a 1945 article in Motion Picture Magazine reported, against Marshall's wishes, on his work at military hospitals. The author Patty De Roulf insisted that his story needed to be told to help injured veterans and their families and to show that "Marshall is doing one of the finest war jobs any human being can do." She interviewed one young officer, who recalled: Herbert Marshall gave me back my life. When I found out I had a metal claw instead of a hand, I was completely broken...Then one day, while I was in the hospital, we were told Herbert Marshall, the film star, was coming to talk