Readers who love the Spirit Animal books will flock to the third volume in Michelle Paver's bestselling fantasy series about a courageous boy who fights evil alongside a loyal wolf. It's winter, and Wolf, Torak's beloved pack-brother, has been captured by an unknown foe. In a desperate bid to rescue him, Torak and Renn must brave the frozen wilderness of the Far North. As they battle for survival amid howling blizzards and the ever-present menace of the great white bear, their friendship is tested to the breaking point, and Torak is forced to get closer to his enemies than ever before.