Book excerpt: Can you ever be sure of a shifter's heart? Jenny Layne has her man, but does she really have his heart? Just when Jenny needs him most, Billy Stewart has gone missing. Has she scared him away, is he in danger, or has he succumbed to the call of the wild? As the worst winter in a generation closes in, the search for Billy rapidly becomes a matter of life or death - for him, and for those who seek him. Jenny is the person most likely to find him, so why does she refuse to shift into wolf-form and join the search? What does she fear even more than losing the love of her life? In the third and final part of her acclaimed Highland shifter series, Ruby Fielding asks just how much would you be willing to give up for the one you love?