This is the sequel to "Invisible" reprising the characters Emmy Dockery (FBI researcher) & Harrison "Books" Bookman (former FBI agent, invited back to help with the case) If you' haven't read "Invisible" I would recommend that you read it first. Both have twisting, surprising plot lines as the duo, with help from their team, hunt down serial killers that are hiding in plain sight. You won't want to put it down!!
From the man who invented mass production of bestsellers comes, in my humble opinion, the best co-authored thriller of his entire career. With the extremely talented assistance of David Ellis (who has written a number of bestseller novels on his own), Patterson has truly out-done himself, with a novel that is actually the 2nd in a series involving FBI analyst Emmy Dockery. If ever a Patterson novel deserved a 5-star rating, this is it!