A New York Times bestseller from the beloved author of the action-packed Animorphs series and the award-winning The One and Only Ivan. In this first book of an epic middle grade series, Katherine Applegate takes us on an unforgettable journey. Byx is the youngest member of her dairne pack. Believed to possess remarkable abilities, her mythical doglike species has been hunted to near extinction in the war-torn kingdom of Nedarra. After her pack is hunted down and killed, Byx fears she may be the last of her species. The Endling. So Byx sets out to find safe haven, and to see if the legends of other hidden dairnes are true. Along the way, she meets new allies—both animals and humans alike—who each have their own motivations for joining her quest. And although they begin as strangers, they become their own kind of family—one that will ultimately uncover a secret that may threaten every creature in their world. Building on the success of her critically acclaimed novels The One and Only Ivan, Crenshaw, and Wishtree, while also returning to her action-packed fantasy roots of Animorphs, the Endling series is Katherine Applegate at her finest. With its enthralling characters, unique setting, and gripping adventure, this series is the perfect next read for fans of Rick Riordan, Brian Jacques, and Tui T. Sutherland.

To learn if she truly is the last dairne in the world—the endling—Byx and her friends must travel into the snow-covered mountains of the country of Dreyland, where they hope to uncover the truth behind the legend of a hidden dairne colony. But the threat of war across the lands continues to grow with each passing day. As the group confronts untold dangers at every turn, they will ultimately uncover a treacherous plot that involves the other powerful governing species. With both her dreams and all the creatures of Nedarra on the brink of extinction, Byx and her friends are determined to never give up hope. Soon they find themselves the unlikely leaders in a simmering rebellion that risks everything they hold dear. Byx may be the last of her kind, but will she also be the first to lead the revolution?

The thrilling conclusion to the epic middle grade fantasy trilogy from Katherine Applegate, the New York Times bestselling and Newbery Award-winning author of The One and Only Ivan (now a major motion picture!), The One and Only Bob, Wishtree, and Crenshaw! In the beginning, Byx’s original quest was to discover if there were more of her kind, or if she was destined to become an endling—the last dairne alive. She did indeed find more dairnes, and along the way she also created allies among other creatures in her world, including humans, felivets, raptidons, and wobbyks. But Byx and her new friends soon learned that it wasn’t just dairnes in jeopardy of extinction, but that everyone was at risk. With the world in unprecedented danger, Byx must rally creatures of all kinds to lead a revolution.