Wow. The last book of the series, and what a book it is!
Firstly, don't try to read this as a standalone - you do need to have read the series first. But do read the series! Definitely worth it, and really good.
There are vampires and werewolves of a sort in this book, so those who like paranormal will enjoy that. Personally, paranormal is not for me, yet I have really enjoyed this series, as the altered humans have a scientific reason for having been altered - to say that, and that it is to cope with the environment, is not, I think, too much of a spoiler. Normal humans too, and our heroine is one of those, together with her little sister. This series is about how they survive - where is safe for them to live - and who should they trust?
What is brilliant is that there is plenty of action, which I love, and rather than one huge twist, there are lots of little ones throughout the book. That's great! Personally, I sat down and read it in one day, because I really wanted to find out what happened, but may go back and read it again, slower, to enjoy the smaller bits of it too. This book has various different settings, which make for interest, and the author has the knack of giving the background information without it being too intrusive. She also is excellent at writing compelling and interesting characters, that made me care about them - vital for a book to keep my attention. I can thoroughly recommend this series to anyone!