In this action-filled conclusion to the Elf Realm trilogy, Matt, Tuava-Li, and Tomtar must reach the fabled elfin city of Hunaland at the North Pole. There they will plant the seed that will cause the Tree of Adri to grow anew and strengthen the invisible walls that separate the elfin world from the human.

Meanwhile, Jardaine and Nick the troll have tricked Becky into joining them to supposedly rescue Matt from danger. In reality they wish to plant the Seed of Adri themselves, sacrifice Becky, and claim the glory and rewards from the elfin gods.

It is a fast-paced race to get to the North Pole first and plant the seed, but unexpected horrors await whoever journeys beyond the Gates of Vattar, where the fading tree grows and where the new seed must be relinquished. Who will get there first? Readers will eagerly seek to discover if Matt and Becky save the world from impending doom and destruction and forever separate the human world from the elf realm for the safety of them all.

Daniel Kirk wrote and illustrated the Library Mouse series. Library Mouse was given a starred review by Booklist, which called it "a show-stopper." He is also the author of Elf Realm: The Low Road and Elf Realm: The High Road. He lives in Glen Ridge, New Jersey, with his wife and their three children. Visit him at www.danielkirk.com.