In Ava's dreams, her son, Noah, looks just the way she remembers him : a sweet two-year-old in rolled-up jeans and a red sweatshirt. When Ava wakes, the agonizing truth hits her all over again. Noah went missing two years ago, and his body has never been found. Almost everyone, including Ava's semi - estranged husband, Wyatt, assumes the boy drowned after falling off the dock near their Church Island home .... Despite their apparent concern, Ava can't shake the feeling that her family, and her psychologist, know more than they're saying. But are they really worried for her well-being -- or anxious about what she might discover? Unwilling to trust those around her, Ava secretly visits a hypnotist to try and restore her memories.