demoniac possession

Torak, having sworn to avenge the killing of one of his closest friends, braves the hidden valleys of the Deep Forest, where the clans have reverted to the savagery of earlier times, and gains insight into why he is the Spirit Walker and the true cost of revenge.

When his pack-brother, Wolf, is taken by the Soul-Eaters, Torak must brave the wilderness of the Far North and infiltrate their clan to bring him back.

Twelve-year-old Tarak and his guide, a wolf cub, set out on a dangerous journey to fulfill an oath the boy made to his dying father--to travel to the Mountain of the World Spirit seeking a way to destroy a demon-possessed bear that threatens all the clans.