I am a huge fan of the Joe O'Loughlin series so it was a no-brainer that I was going to read this book. Usually the books in the series keep me on the edge of my seat but this on just fell flat. It pains me to say that I was a little disappointed in this book. This just didn't feel like a true Joe O'Loughlin book. One of my favorite parts of the series is the relationship and interaction between Joe and Ruiz. Now while Ruiz is back in this book sometimes it just seemed like he was part of the scenery. Usually Ruiz is a crucial help to Joe when he solves crimes but this time he seemed just like a lackey.There was action in this book but at times it dragged on. I never really felt hooked on the action in this book as I have of the previous books. Some parts of this book (i.e. a female castration) were a bit excessive and seemed to have been put in merely for shock and awe and not to add to the story.It was nice to read about Joe again, even if at times it felt like a half-hearted appearance. I would recommend this book to fans of the series.