** spoiler alert ** 
 I really liked this book. I liked how the author switched point of views almost every chapter, and they had me guessing at the end. Throught out the entire book, Sam and Grace have to deal with the fear that Sam could change into a wolf....but never change back into a human. So, to prevent this from happening, they have to keep him at all . For example, at one point, Grace even had to force Sam into a bath tub, with the water at boiling, after he had just told her that when his parents saw him change into a wolf for the first time, they tried to kill him in the bath tub. 
 At first I thought that it was going to end with Sam still being a wolf, but I was so happy when the cure they came up with of giving him and Jack meningitis to make it so they got huge fevers, and to kill the wolf part in them, actually worked. I can't wait to read the next book, and to find out what happens with Grace and Sam, and if they are going to inject meningitis into the other wolves, even though Jack died.