I read the first book of this series (The Nightshade series) and loved it. So, I was hoping to love this one as well. I did, though I was little unsure if I should really give it four stars or three. Not that it wasn't a great read, just that it wasn't what I expected exactly. (BTW: The cover I used is the first cover, there is a 'new' one and I don't like it, so I'm not using it.)
Cala is an Alpha, born from the Alpha couple that lead the Nightshades. This book picks up with her waking in the Academy for the Searchers. Searchers are magical people who hunt Guardians (which is what Cala is, it's the group of people who shift into wolf form) and Keepers. And how much of any of this makes sense if you haven't read the books? Probably not much, sorry. :/
I'm going to go on and spoil it now for anyone who wants...