In a Seattle research laboratory, Dr. David Harrison has accidentally stumbled upon something truly remarkable: the Twistor Effect, an unparalleled scientific phenomenon that opens doors into numerous alternate universes. His discovery is a breakthrough of earth-shattering proportions-and the most dangerous find of the century, for it offers unlimited power to anyone who possesses its secrets. Now David Harrison has become the target of industrial spies and cold-blooded corporate killers-forcing him to seek sanctuary in a strange and unexplored "shadow world." But there's no telling what awaits him beyond its portals. And, once inside, he might never escape.