Blue Wolf — Catherine Creedon

As far as Jamie knew, he didn't have an aunt, but the mysterious letter is just the beginning of the adventure. Jamie finds himself spending the summer with her in an isolated cabin without running water or electricity. He grows to love the near-wild existence, until his routine is upset by the arrival of two strangers, the shadowy presence of wolves, and the disappearance of Louise.

Jamie realizes there is a purpose to his summer visit. As he uncovers the truth, he must risk his own safety and make a decision that could change his world.