the shadow radio show - Street & Smith entered into a new broadcasting agreement with Blue Coal in 1937, and that summer Gibson teamed with scriptwriter Edward Hale Bierstadt to develop the new series. As such, The Shadow returned to network airwaves on September 26, 1937, over the new Mutual Broadcasting System. Thus began the "official" radio drama that many Shadow fans know and love, with 22-year-old Orson Welles starring as Lamont Cranston, a "wealthy young man about town." Once The Shadow joined Mutual as a half-hour series on Sunday evenings, the program did not leave the air until December 26, 1954.
Welles did not speak the signature line of "Who knows what evil lurks in the hearts of men?" Instead, Readick did, using a water glass next to his mouth for the echo effect. The famous catch phrase was accompanied by the strains of an excerpt from Opus 31 of the Camille Saint-Saëns classical composition, Le Rouet d'Omphale.
After Welles departed the show in 1938, Bill Johnstone was chosen to replace him and voiced the character for five seasons. Following Johnstone's departure, The Shadow was portrayed by such actors as Bret Morrison (the longest tenure, with 10 years in two separate runs), John Archer, and Steve Courtleigh.
The Shadow also inspired another radio hit, The Whistler, whose protagonist likewise knows "many things, for I walk by night. I know many strange tales, many secrets hidden in the hearts of men and women who have stepped into the shadows. Yes, I know the nameless terrors of which they dare not speak."