Soul Eater

Blurb

Soul Eater is the third book in the Chronicles of Ancient Darkness series written by Michelle Paver.
"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 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 breaking point, and Torak is forced to get closer to his enemies than ever before..."- Soul Eater