I don't like the concept of Succubi. I find it impossible to believe that anyone would sell their soul for sex. Beauty, yes. Power, yes. Money, yes. But Sex?! Unfathomable. 
 Also, the succubi themselves are the lamest dark creatures. Vampires, demons, the fae, werewolves, warlocks, etc. they all have such cool powers and they're classy. But needing sex to survive and having powers limited to shape shifting, turning invisible and having a lot of "charm" is just pathetic. I find it really hard to believe that anyone would sell their soul to spend eternity as a pathetic creature of the dark. 
 That being said, I found it really hard to dislike Georgina. She's a warm character and a "good" succubus, refusing to take the souls of good men. 
 I gave this book a 3 as my feelings towards it are half positive and half negative. 
 The upside of the 3 stars: 
 - I enjoyed the story as far as paranormal plots go, this was not so bad. It was fast-paced and kept me hooked. (Although I figured out the culprit 300 pages before the heroine did, one does not read paranormals for their intelligence) 
 - The characters were very likable, even the bad guys. I wanted to get to know them. I'm especially fond of Carter. 
 - I'm intrigued enough to continue on to the next book as we were left with some interesting loose ends. 
 The downside of the 3 stars: 
 - I felt uncomfortable with Georgina being a Succubus. 
 - There were a lot of holes in the book. The Succubus acts were not explained properly and I'm still a bit confused about the technicalities. Furthermore, there's a huge error with the murder mystery; (view spoiler)[ Roman claimed he started killing off the people Georgina disliked after he feel in love with her, although she was supposed to be the first victim. However, Duane was killed before Georgie even met Roman! (hide spoiler)]. 
 - The reason Georgina became a Succubus in the first place is the dumbest thing I've ever heard. Thankfully another character asked her about this in the book; her disappointing response was " I don't know". I'm giving her the benefit of the doubt because, A) She was born in the Xth century (we're not told exactly when, but it was eons ago) and B) Women don't make sense at all, especially while they're under great emotional duress. 
 In the end, the Good has won over the bad and I'm looking forward to reading Succubus on Top. I have hope for Georgie and a happy ending. As I'm teetering in the middle at the moment, the second book will decide for me whether the rest of the series is worth pursuing or not.