Chordelia, straddling two of the realities proposed in Everett's Many Worlds Theory of Quantum Physics, has no idea how distorted the line is between choice and fate. In one of her worlds, Chorie's young daughter is dying-a drama that quickly contaminates her other, much rosier, reality. Before long, the emotional burden of dealing with two separate lives spawns heated legal battles, endangers her role as mother and wife, and causes people in both universes to judge her insane. As her lives begin to crumble, so does Chorie's heart and mind. When Dr. Penny, a man with disturbing, murky,...