Let me be honest upfront, when I saw that the author had worked with James Patterson previously, my heart sank. Patterson's approach to writing embodies much that is wrong with modern fiction; simplistic plotlines with shallow, poorly written characters, all set to a formula to produce a sensationalist cover to lure the unwary - you may gather I have little time for him.
There's nothing much new or inventive here, either, but it's an enjoyable tale, well told. If you read much detective fiction, you'll have encountered the characters, but the plot is believable, even if some elements are a little too conveniently concluded. As the author acknowledges, there is much that is stereotypical in the NYPD, so perhaps it's unreasonable to expect innovation in a cop novel.
I guess this will hook large numbers of people seeking something engaging for the beach, and it certainly fits the bill - it's not great literature, but nothing wrong with that - whatever, it's better than buying a Patterson novel .