"Using several figures from Norse mythology, Gaiman has written a thoughtful and quietly humorous fantasy that younger Percy Jackson fans will enjoy. Twelve-year-old Odd hasn't had a good couple of years: his father died rescuing a pony that fell overboard during a Viking raid, his leg was crippled during a tree-felling accident, and his mother married a man he dislikes. So, in the midst of what should be spring ('Winter hung in there, like an invalid refusing to die'), he sets out for a cabin in the wilderness, figuring that anything will be better than home. Soon after arriving, a fox leads him to an enormous bear whose paw is caught in a tree; a large eagle circles overhead. Odd shows kindness and bravery when helping the bear, learning afterward that these three animals are gods who have been transformed by the Frost Giant. Odd is determined to help them, and his ultimate encounter with the Frost Giant is especially interesting, tweaking the tradition of small boys getting the better of giants. Readers will also enjoy Odd's interaction with the animals, Gaiman's simple and graceful writing, and the satisfying conclusion."—School Library Journal