Homicide detective Sean Nault uses unorthodox methods of investigation in a world powered by magic. A cop on a parallel Earth, Sean investigates a baffling series of murders committed by a means he's never seen before: the power of science. With the aid of Lenoir--a member of the ridiculed subculture of "pragmatists" who believe science is more than the stuff of myths and children's stories--and the 130-year-old sorcerer Winston Churchill, Sean uncovers an apocalyptic plot that will lead him to another dimension and the realization that, unless he prevents it, both earths could well be destroyed.