I'll go along with the general consensus on this one; It sort of lacked something.
No frightening plot twist. No insight to the killers mind. Not even an interesting motive. Kay did a lot of thinking. About everyone. All the time. for 99.9% of the book. There were multiple crime scenes, but none really stood out, none gripped your imagination, when you compare to PC's previous novels. It wasn't creepy, nail-biting, or really shock-inducing at all. It wasn't bad, but it wasn't Body Farm or Point of Origin. PC always writes competent novels. Fact-checking, Kay Scarpetta will always be readable. This particular one seemed a little flat for me.