Shiver ~ Maggie Steifvater

Grace is a girl, who survives a wolf attack, and becomes totally enthralled with the wolves who live in the forest behind her house, but for some odd reason, she only sees them in the winter. For some reason, it is like they cease to exist during the summers. Six years after her attack, she has watched all the wolves, and feels especially close to the one that she believes stopped the attack on her, she learns something… Werewolves do exist, but a lot of what is said just isn’t true… so, why didn’t she become one?