On the night their mother drowns trying to ride out a storm in a sailboat, sisters Marnie and Diana Maitland discover there is more than one kind of death. There are also teh deaths of innocence, of love, and of hope. Both harbor secrets about what really happened that night - secrets that will erode their lives as they grow into adulthood. After ten years of silence between the sisters, Marnie is called back to the South Carolina Lowcountry by Diana's ex-husband, Quinn. His young son has returned from a sailing trip with his emotionally unstable mother, and he is deeply disturbed and refusing to speak. In order to help the traumatized boy, Marnie must reopen old wounds and bring the darkest memories of her past to the surface. And she must confront Diana...before they all go under.