Newbery Honor-winning Kathryn Lasky, author of the bestselling Guardians of Ga'Hoole and Bears of Ice series, delivers a sweeping middle grade animal adventure with loyal beavers, a cultured swan, and ominous lynxes around every turn--a captivating story about heroism, loyalty, and the courage to speak truth to power.

"Draws readers deeply into a mystical world and leaves them wishing for more." --Kirkus (starred review)

"A marvelous adventure...an enchanting introduction to a wonderful, new natural world." --Booklist (starred review)

"Themes of belonging and friendship are well conveyed... as are the complexities of this industrious world of creatures." --Publishers Weekly

Deep in the wilds of Scotland, land of ancient warrior kings and myths, there is a deep secret. The secret is a colony of beavers, a species that is craved for their fur pelts, but vilified for what humans consider to be the destruction of their land. No beaver has been spotted in Scotland or England for over five hundred years, until the young beaver, Dunwattle, is sighted!

Dunwattle's flight is driven by the presence of a ghostly figure, a figure of a mysterious young girl who is almost one thousand years old. And now Dunwattle is destined to be destroyed for revealing the hidden colony, but his best friend Locksley is determined to save him. Will their ancient beaver colony survive?

• An Epic Animal Fantasy: Explore a hidden world of talking beavers, wise swans, and menacing lynx, brought to life by the Newbery Honor-winning author of the Guardians of Ga'Hoole series.
• A Centuries-Old Secret: For five hundred years, the beaver colony of Glendunny has remained hidden from humans. When young Dunwattle is spotted, he breaks their most sacred law and risks everything.
• A Mysterious Haunting: Dunwattle's flight is sparked by the appearance of a ghostly girl nearly a thousand years old. What does she want, and what is the true secret of Glendunny?
• A Story of Heroism and Loyalty: With Dunwattle's life on the line, his best friend Locksley must find the courage to challenge the colony's ancient rules and save him from a terrible fate.