Great second book in this detective series. I love the rhythm, always fast, the story was captivating, the writing was alright for this genre and I really like the presence, the intrusion in the prostitution world, it was well done in my opinion, interesting and it covers different aspects of the subjects. Two little negative points that loss it a star. First, the development of Helen was not enough, not much evolution in her and I was expecting more after the event of the first book (Charlie on the other end had a good evolution). Second, and worse, I'm a bit disappointed by the male representation of this book, I get that this is mostly about prostitution an that male are the more common «user», but every man, and I mean literally every one of them, is a pervert, a rapist, a sadist and every one of them feel the need to use the service of a prostitute, which I can't agree with. It would have been great to have a least one good guy (rethinking it Charlie husband was okay, even if... at least he wasn't on prostitute, but he was a very very secondary character) in the whole book, and this bad representation of men is something we get more and more often in thriller book written by woman, just saying... That being said, I still enjoy this book very much for what it was, a good and efficient thriller and will continue to follow Helen Grace in her next adventure!