Spirit of the Wolf by Constance M. Burge
A wolf threatens to attack then vanishes like a ghost. Could this be a sign that the Charmed Ones are meant to help? Is the wolf spirit really just searching for its lost land, or is it looking for something else? Strange things are happening at the resort in the Sierra Nevada: a tree bursts into flames, the cook's bunk jumps and rattles, a wolf threatens to attack then vanishes without trace. The police suspect a nearly extinct Native American group that was forced off the land long ago. Ben Waters, the resorts driver, suggests that an ancient powerful shamen and his brother, the wolf, have returned to help. But the only record of the tribels claim to the land is a wampum belt; a belt that nobody knows what it looks like or where it is - except the wolf. But now the wolf is being hunted - and only the Power of Three can save him.