Plot Summary:Eight-year-old Sandra Cantu is playing outside her mobile home in Tracy, California when she vanishes into thin air. Only a surveillance tape provides clues about who took her. Local authorities call in the FBI's specialized Child Abduction Response Unit, as they race to find Sandra alive. The FBI's list of potential suspects grows frighteningly long as they discover sex offenders and predators who live in the trailer park. Even a Sunday School teacher raises their suspicions. When Sandra's body is eventually found, they must race to stop the killer before another child is murdered.