Who knows what fear lurks in the hearts of men? The Shadow does. And, it appears, so does Orson Welles. Welles, of course, played the mysterious figure in the episode below. The famous catchprase, however, was voiced by Frank Readick (with an assist from a water glass to create the echo effect).
The Shadow began on the Mutual Radio Network on September 24, 1937; the last episode aired on December 26, 1954. Welles played the lead in the show for about a year, to be replaced by Bill Johnstone for fie years, then by Bret Morrison, John Archer, and Steve Courtleigh, in succession.
"The Hospital Murders" was the 47th show in the series, airing on August 14, 1938.