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Escaping from Germany just as the Third Reich crumbles to dust, ruthless SS officer Herr Bautmann (played by a pre-Hogan's Heroes Warner Klemperer) makes his getaway in a U-Boat. En route to Bautmann's South American hideway, the crew of the undersea vessel is driven to distraction by a mysterious pounding sound--a maddening din that threatens to give away their position to the Allies. In the coda to this eerie episode, host John Newland explains that the story was based on an incident that occurred many, many years before the end of WW2.