Heike Lerner has a charmed life. â??â??â??A stay-at-home mother married to a prominent psychiatrist, it's a far cry from theâ?? damagedâ?? â??child she used to be. But her world is â??shaken when her four-year-old sonâ?? â??befriends a little girl at a nearby lake, whoâ?? vanishes under the water. â??And when Heike dives in after her, there's no s