Flash Gordon, Dale Arden and Dr. Zarkov return to the planet Mongo when it is discovered that a plague decimating the earth is the result of Emperor Ming the Merciless.
This is probably one of the smoother of the feature versions of serialS that I've seen; only occasionally does the action shift abruptly and the music skip. I think it also helps that this is from one of the Flash Gordon serials, which, in comparison to the Republic serials, have more in the way of a story arc to sustain a feature length. It also helps that it features Buster Crabbe and Charles Middleton, perhaps the best serial hero and villain of all time. My main problems are the usual ones; overfamiliarity with the story (I've already seen both the individual serial and the other feature version PERIL FROM THE PLANET MONGO ) and the simple fact that, despite the fairly smooth editing, it still feels like watching several episodes of a serial at onCe. Still, this is about as good as this type of thing ever gets.