NEVER DROP YOUR GUARD. NEVER CLOSE YOUR EYES. OR YOU'LL NEVER SEE HIM COMING...Zoe and Chloe Denning went out to celebrate their twenty-first birthday. They never made it home. Abducted by a man whose victims are always twins, and whose murders are planned in exquisite detail, they now face a deadly struggle to survive...For Brianna Hayward, the twins' disappearance is proof that the '21 Killer' has reached New Orleans. But unless she can persuade the police they got the wrong guy, more innocents will suffer. Reporter Jason Bridges is intrigued: the story could make his career. But both he and Brianna have secrets to hide. Detective Rick Bentz always had his doubts about the '21' conviction. Now the real murderer may be loose in his backyard. As Bentz and his partner Reuben Montoya desperately follow the trail, the killer prepares to unite Zoe and Chloe in death forever...