Leaving his favourite Oslo cafe, Harvath watches as a ghost climbs out of a taxi, a man he killed years ago, halfway around the world. In a race against time that will take him high above the Arctic Circle, Harvath will be tested in ways he has never imagined and pushed to a limit few human beings could ever endure. If he succeeds, he'll walk away with everything. If he fails, the United States and its allies will be at the mercy of one of the world's most dangerous actors.