"The Whistler" was an American radio program running for a total of 13 years from May 16, 1942 until September 22, 1955. It was one of the most popular mystery dramas of its time. Signal Oil Company sponsored the program, and the marketing catch phrase was: "Let that whistle be your signal for the Signal Oil program, The Whistler."
During the first two years of the show J. Donald Wilson was the writer and producer. During 1944 producer and director George Allen took over. Other directors included Sterling Tracy and Sherman Marks with final scripts by Joel Malone and Harold Swanton. 692 total episodes were produced. Over 200 of those episodes can not be found and are no longer in existence.
Episodes of The Whistler began with the ominous narration:
I am the Whistler, and I know 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. I know the nameless terrors of which they dare not speak.