The third serial adventure starring Buster Crabbe as Alex Raymond's sci-fi       hero, Flash Gordon. Flash and friends battle Ming the Merciless on the planet    of Frigia, encounter rock men and, apparently, borrow costumes from the cast     of Robin Hood. Carol Hughes takes on the role of Flash's girl Dale, and  Charles Middleton plays Ming, as usual, for every drop of villainy he can      muster. Fans consider this the best of the Flash Gordon serials.         Ford Beebe/Ray Taylor---USA---1940---220 mins.