Oath Breaker is by Michelle Paver. The fifth book in the Chronicles of Ancient Darkness series. Torak and Renn head for the Deep Forest to kill the Soul Eater Thiazzi who has just killed Torak's kinsman and taken the last piece of the fire opal. But there is a rottenness at the heart of the Deep Forest clans that threatens to create a war that will engulf everyone. Can Torak kill the Oak Mage before it's too late? Can he recover the fire opal? Can he and Renn stop a war between the clans? This is such a good series! I can't wait to see what happens next.
Ratings: 8th grade - 10 out of 10.