Book 2 of the Serpent Catch series In Spirit Walker, Tull learned that he has a powerful gift that has never been seen before except among full-blooded Neanderthals. But learning to use the gift can be deadly. Worst of all, as he struggles to sneak into the land of Craal to capture the sea serpents that he needs to save his people, he must face betrayal at the hands of the woman he loves, and finds himself hunted by powerful sorcerers among his enemies.