I loved this book. At first I was a little confused because clearly there is a lot about Ruby the author just isn't cluing you in on, but as time goes by you start to realize there is a pattern. Ruby's blackouts and the actions of the men around her all clue you in on what is going on and what Ruby really is. 
 Natusch did a fantastic job keeping me hooked on the story. So much so that the moment I got my gift card from my best friend I purchased the sequel. I can't wait to get started reading it and look forward to the future volumes. 
 Let's talk about Ruby. For a girl who claims she rarely cries she does a lot of it in this book but it seems understandable considering the highly emotional circumstances she continually finds herself in. And while you get the impression that Ruby isn't at all stupid, sometime you know she's not thinking at all. 
 Sean is a very large part of Ruby's life as he's the man that rescued her when her parents died (no real spoiler there). She then decides they have to be friends only it seems clear to the reader that Sean isn't thinking friendship and Ruby is convinced he wants to kill her... and you kind of suspect it too. 
 Ruby's friend Ronnie is highly enjoyable and while she's not in the story much, I hope she'll be more prominent in the future volumes. I feel like there could be a secret there. 
 I think if you liked Keri Arthur's Riley Jensen Series or MaryJanice Davidson's Queen Betsy series you'll enjoy Amber Lynn Natusch's Caged Series.