Capturing angels - V. C. Andrews

Grace is a happily married mother of five-year-old Mary, whose loving and angelic demeanor charms everyone around her. But in one tragic moment at a local shopping mall, Grace looks down to discover that Mary is no longer at her sideand can't be found anywhere. She and her husband wait by the phone for a ransom demand that never comes. For months Grace keeps up hope that Mary is somewhere, alive and safe, waiting to come home to her -- but as her family and friends give up hope, Grace's marriage begins to crumble. Only one detective, Sam Abraham, shares her determination to find Marybut could his motives be less than altruistic?

As Sam and Mary work together to track Mary's disappearance, they discover clues that this was more than a random kidnapping and that Mary may have been special to more than just her mother