It took me a little while to get into this book, but once it grabbed me it had me by the throat and refused to let me go. It was pretty engrossing. The interesting thing I noticed though, is how similar the abuse (unsure of how else to phrase it) was in this book and in the recent "Better Homes and Hauntings" at times. Nina and Tina/Anna did not suffer the same abuse by a long shot, rather I'm referencing the way that their respective manipulators tried to get revenge against them for leaving. Both tried to get even by ruining their credit- a common tactic so it's reasonable that both would have this happen to them- but both men purchased the same items. I'm not entirely sure why I'm mentioning this since the books were otherwise very different, but I figured it'd be worth mentioning. 
 In any case, I did like the interactions between Tina/Anna and Caleb. I also liked that Tina/Anna was so skittish because that's fairly normal, and I like that Harper tried to explain why she stayed with Glenn. It's easy for people to ask why people stay in situations like that and one of the big reasons is that the abuse is very slow to form and many ignore the red flags because they don't seem so bad at first. Tina/Anna compares it to a frog in a boiling pot and that's a rather apt analogy. The situation in this book isn't the absolute norm, but hopefully it'll help illuminate what goes on in an abusive relationship a little for those who wouldn't normally read books featuring this subject. (Urban fantasy, paranormal romance, and romance books don't always cover topics like domestic abuse, although it's not unheard of.) 
 The only true downside is that this book took a little while to get started. Once it did, it really took off and I finished it within a day. Definitely worth checking out if you enjoy Harper's work overall.