Summary: “In England in the early medieval period, young Jack is chosen by the village's bard to serve as apprentice. After the bard is attacked by a Nightmare, Jack develops the ability to feel everything at once, which causes him to be vulnerable to the ‘Life Force,’ the power that exists in all things in nature. When they realize that Viking berserkers are coming, Jack and the bard raise fog to hide the village, but Jack and his sister, Lucy, are captured by Ivan One-Brow and his crew and are taken to the court of Ivar the Boneless and his evil half-troll wife, Queen Frith. Jack casts a spell to make the queen's hair fall out. To save his sister from being sacrificed to the Norse goddess Freya, Jack must accept a quest to travel to the icy Troll kingdom to find Mimir's Well, from which he must drink in order to learn the magic spell to replace the Queen's hair. Throughout his journey, Jack must deal with an argumentative Norse Jill, trolls, giant troll bears, a dragon, and giant spiders. As he completes his quest, Jack matures and realizes that all beings have the Life Force within them and must answer to its calling, whether it is Yggdrisil, the giant life tree of the Norse, or the simple need of berserkers to raid and pillage. Farmer weaves the threads of Norse and Celtic mythology into a coming-of-age tale that followers of Tolkien and J.K. Rowling will enjoy.”
–Lisa D. Williams from School Library Journal