(Might be some spoilers!!!)
Sophie Mckenzie is one of my all-time favourite authors. I read many of her books when I was younger and I continue to read and reread them now. I could possibly stretch to say that the Blood Ties series is my favourite of hers, but I don't know, It's too hard!
The characters are amazing, I love how much Rachel changes and how you can really feel it through-out the book. Also, the change in characters every chapter is genious. Not only can you see what they're both doing but you can also get their diferent opinions, which was really good with these characters. I was worried that Rachel and Theo would sound the same but I was presently surprised. I could easily pick up the book from where I'd left off and know instantly who was narrating.
The plot, which is full of scientific goodness, didn't disappoint. Just when you think the ation has ceased, another fight is set off. This was good because it didn't just mean one huge scene at the end. Personally, I prefer Sophie Mckenzie's sci-fi to her more romance novels, but coincidentally, that is because they're a mixture of both. Theo and Rachel's relationship was a great touch to the story, you were tied as much to that as you are the plot.
And finally, the writing was exceptional. As I said before, you could easily tell who was talking. The descriptions were exactly what you would excpect from the characters, instead of a deep description that is totally out of character.
Another great novel from Sophie Mckenzie, and maybe my favourite!