I saw this movie years ago and it left quite an impression on me. What a brilliant story and premise. It is basically a story of prejudice - long before its time (1962). The production, acting and directing was awful, but if you can get past that you will be rewarded. This is a story that needs to be considered for a new production which is more professional. There is no need to repeat the story since another reviewer has done an admirable job. In this story the "mad" doctor has a heart and is really a good guy. It is the flesh and blooders vs. the clickers. But you can substitute any other racial conflict such as the race riots in the U.S. and others throughout the world. I have never read the book, but am anxious to find it.