The Prisoner of Swing Musical satire based on Anthony Hope's Ruritanian novel "The Prisoner of Zenda" in which a commoner takes the place of a lookalike king. Details Casts Galleries Posters Title The Prisoner of Swing Release Date 1938-06-11 Runtime 00 Hours 22 Minutes Genres Music Comedy Production Companies Warner Bros. Pictures Production Countries United States of America Hal Le Roy... Rudolph, King of Sulvania... Eddie Foy Jr.... Dantsau... June Allyson... Princess... Percy Helton... Messenger... Ruth Dryden... Antoinette... Al Fields... Colonel... Bruce Evans... ... Original Size (1280x720) Original Size (800x1172)