The Other Darrin/Radio

Examples of in  include:


 * Halfway through the 20-year run of the The Lone Ranger radio serial, Earle Graser, who played the Ranger, died in a car crash, mandating a quick replacement. The producers covered up the voice change by having the Lone Ranger get shot in the neck by an arrow, requiring Tonto to speak on his behalf for several weeks, until Brace Beemer was chosen as the new Ranger.
 * Howard Duff was replaced as radio's Sam Spade by Steve Dunne, who sounded nothing like Duff.
 * On the other hand, when Harold Peary left The Great Gildersleeve, his replacement, Willard Waterman, sounded so much like Peary that few listeners could tell the difference.
 * In the original series of The Hitchhikers Guide to The Galaxy the voice of the Guide was done by Peter Jones, in the new series it was William Franklyn. Lampshaded as an 'upgrading' of the guide with an extremely well-edited merging of the two voices at the beginning of the series.
 * Tom Conway replaced Basil Rathbone on the old Sherlock Holmes radio series.
 * On The Shadow, Lamont Cranston and Margo Lane were each portrayed by a succession of voice actors.
 * The Whistler was portrayed by several different actors during the course of its run.
 * Yours Truly, Johnny Dollar had the distinction of being the last radio show of America's Golden Age of Radio, ending in 1961. The most popular of Johnny's six distinct voices, Mandel Kramer, also happened to be the last.
 * Adric is voiced by Andrew Sachs instead of Matthew Waterhouse in the Big Finish Doctor Who audio "The Boy That Time Forgot" because Waterhouse, who last played Adric in the Doctor Who serial Earthshock in 1982, declined to participate. The change is still acceptable because Adric is no longer a kid but several hundred years old.