Tala Birell's role is indicated in the credits (not "uncredited" as heretofore indicated). The episode was filmed in Berlin and was the only episode in which Tala appeared. She looked all of her 45 years and would die several years later from cancer. Tala's commanding presence as a vicious queen determined to rule the universe expands the range of camp performances, unfortunately her last role in a 30 years career on stage and in film.
Review of Flash Gordon
