From the cover and the blurb, I expected more of this book. I am not familiar with the author's other sci-fi work as Michael Marshall Smith, so my expectations were strictly limited to the cover, blurb and word of mouth.
The book starts with an horrific scene of mass murder, which appears unconnected to the two stories that then weave through the next chapters. These two stories also, at first, appear completely unlinked, but eventually link. When linked - Ward & Bobby on the conspiracy of Ward's parents death with Nina & Zandt on the serial murder/young girl abduction - there's a good fast pace to the end.
It's easy to enagage the characters and situation of Ward & Bobby, but Nina's character draws little sympathy and seems almost a cameo. As a result, her relationship with Zandt and their predicament loses momentum and interest.
There are sections of undoubtedly powerful and explosive writing, that will leave you with a dropped jaw. However, as a whole it does not quite gel into the fast paced thriller you might hope for.