After listening to the very good Sci-fi Episode the "god Machine", i saw the commenter J KID suggested this episode, as the best SciFi Episode of Mystery Theater-"The Walking Dead". Although I am not a devotee of this Genre, and probably have not heard all of them on CBSRMT, I must agree that this is Excellent in every way! Its plotting, pacing, acting, suspense, deep philosophical ideas are all superb. The ending leaves a deep imprint on your mind, you can visualize the scene perfectly as EG Marshall starts saying his final words. Over the years I have heard some good Sci fi episodes, such as Dimension X "There will come soft Rains", but I think that if there was a Hall of Fame for Sci Fi Radio Episodes, this would be right up there.