This was so iffy-to-bad, I was in fact shocked to find the author is 40 (!) and has trad published several books, including winning an Edgar award.
Echoing everyone else who wondered where the "thriller" was, until the minimum halfway point of the story.
although maybe this characterization is not the author's fault; it was more like "a straight up story where mysterious things occasionally happen", than it was a "thriller", and then all of a sudden, it turned lickety split into a fairly decent grade B horror movie...
also, the fact that I've actually strolled some of the streets of Brooklyn did not help.
For some books it might; for this it did not, because all I could think was "this is an area where the NYPD is in charge; not Barney Fife." You can say lots of things about the NYPD; you can't really say they're amateur, and it's really hard to believe in any type of world where they've ALL been bought off to look the other way... the author's literary style is good, though.