WHO DO YOU LOVE? One question, a split-second decision, and Brian Darby lies dead on the kitchen floor. His wife, state police trooper Tessa Leoni, claims to have shot him in self-defense, and bears the bruises to back up her tale. For veteran detective D.D. Warren it should be an open-and-shut case. But where is their six-year-old daughter? AND HOW FAR WOULD YOU GO. As the homicide investigation ratchets into a frantic statewide search for a missing child, D.D. Warren must partner