A fascinating and disturbing dystopian vision from a neglected sci-fi master, imagining an all too terrifying alternate ending to World War I and its implications for the human raceThe year is 2041. Since the end of WWI, Berlin has been an enormous subterranean city, home to 300 million citizens who have never seen the sun, and presided over by the autocratic Hohenzollern dynasty. Every aspect of life is regimented; from controlled rations that are...