Magic Island was a science-fantasy radio serial aimed at a juvenile audience, airing in the late 1930s and 1940s. The show followed wealthy Patricia Gregory's search for her long-lost daughter, Joan, who had been presumed dead after a shipwreck 14 years prior. With the help of young Jerry, they find Joan living on a secretive, man-made island capable of submerging to escape detection. The 130-episode series features Sally Creighton as Patricia Gregory, Rosa Barcelo as Joan Gregory, Tommy Carr as Jerry Hall, and Will H. Reynolds as Capt. Tex Bradford. The show was produced, written, and announced by Perry (Percy C.) Crandall, who also appeared as a cast member.