The Norns have prophesied that Altair and his huldufólk guardian Magnús face a glorious destiny or a hideous death. Together, Magnús and Altair have already survived near-lethal attacks, but the dangers ahead of them grow ever darker. The Yule Cat, a man-eating trollwife and her brood of dangerous children, ghosts, and other horrors out of legend chase the elf, the human, and their cohorts across the north of Iceland. Time is running out to break the sorcery that keeps Altair from learning who—and what—he really is. The invasion foretold by the Norns looms ever closer, and Magnús knows he is fated either to lose Altair, or to meet his own doom. The stakes rise as they finally begin to understand the danger to all of Iceland posed by the Black Priest. But they cannot waiver. In the face of betrayal and murder, Magnús of the Hidden Ways must guard Altair the Falcon, or all is lost. An elf afraid of opening his heart, and a human who is heir to an awesome power: Only by embracing their shared destiny can they save Iceland…and each other.