I love Ali Sparkes Books - and pinch them off my Grandsons as soon as I can. "Unleashed" seems to lean more towards the teenage/adult range than some of her earlier ones. It is brilliantly researched and quite "dark" in places but as usual, so exciting you really dont want to read it when you should be doing something else as you wont be able to put it down! I read quickly but two hours was going some even for me!!! Somehow Ali seems to make the impossible totally believable. MORE MORE MORE (especially Shapshifters) please Ali!!