In the book touching spirit bear what does possess?

The book "Touching Spirit Bear" by Ben Mikaelsen does not mention the concept of "possession" in the way you might be thinking of it. The story focuses on the journey of a troubled boy named Cole Matthews who is sent to a remote Alaskan island as part of a restorative justice program after committing violent acts. Throughout the book, Cole grapples with his inner struggles, seeks redemption, and learns about the power of nature and forgiveness.