Swain, author of the gambling crime series starring Tony Valentine (_Grift Sense_, etc.), avoids many of the clichés of the antisocial ex-cop novel in this chilling stand-alone. A specialist in finding missing children, former cop Jack Carpenter was fired from the force for assaulting a prisoner. Broke after a civil lawsuit and estranged from his wife and daughter, he's living in a seedy beachside apartment north of Miami, Fla., with his dog. Then Simon Skell (aka the Midnight Rambler), whom Carpenter helped convict for murdering prostitutes, is released from prison on a technicality. Determined to prove Skell guilty, Carpenter is frozen out by the cop on the case, but help comes from an FBI agent whose daughter vanished years earlier. The tension rises as the investigation widens far beyond Skell. Well-defined characters and intricately woven subplots, one involving a nail-biting scene at Disney World, make this a page-turner.