In Viking Age Iceland, where boys are expected to grow into strong farmers and skilled warriors, there is little place for a sickly twelve-year-old boy like Kol until he catches the eye of a sei -woman-a sorceress-and becomes her apprentice. Kol travels to the sorceress's home, where her grandson, Thorbrand, takes Kol under his wing. Before long Kol discovers something else about himself that is different-something else that sets him apart as unmanly:...