Its 1921, and a thirteen-mile fence running the length of Broadway splits the island of Manhattan, separating the prosperous Eastside from the Westsidean overgrown wasteland whose hostility to modern technology gives it the flavor of old New York. Thousands have disappeared here, and the respectable have fled, leaving behind the killers, thieves, poets, painters, drunks, and those too poor or desperate to leave. It is a hellish landscape, and Gilda...