It's a blindingly hot summer. International visitors surge into Sydney's Darling Harbour. Two-year-old Tommy is sailing his toy boat in the park there with his mother Phoebe. Tommy vanishes into thin air. The following winter, taunting notes written as nursery rhymes begin arriving at his parents' home. Little Boy Blue, where did you go? Who led you away? Only I know.

Praying her daughter’s still alive. Fearing her past is about to take its revenge. When three-year-old Immy vanishes during a family barbecue, her mother, Cleo, imagines the worst. Has she fallen into the river at the end of the garden and drowned? Or is it something even more unthinkable? After all, there's one person with good reason to want to abduct Immy - the woman Cleo thought she’d seen the last of three years ago. With time running out, Cleo sets out to uncover the truth.

In the aftermath of her financier husband's suicide, Emma Shay Compton's dream life is shattered. Richard Compton stole his clients' life savings to fund a lavish life in New York City, and, although she was never involved in the business, Emma bears the burden of her husband's crimes. She is left with nothing. Only one friend stands by her, a friend she's known since high school, who encourages her to come home to Sonoma County. But starting over isn't easy, and Sonoma is full of unhappy memories, too.

College student Joe Talbert has the modest goal of completing a writing assignment for an English class. His task is to interview a stranger and write a brief biography of the person. With deadlines looming, Joe heads to a nearby nursing home to find a willing subject. There he meets Carl Iverson, and soon nothing in Joe's life is ever the same. Carl is a dying Vietnam veteran-and a convicted murderer. With only a few months to live, he has been medically paroled to a nursing home after spending thirty years in prison for the crimes of rape and murder.

In the course of her everyday work, career-driven assistant district attorney Nina Frost prosecutes child molesters and works determinedly to ensure that a legal system with too many loopholes keeps these criminals behind bars. But when her own five-year-old son, Nathaniel, is traumatized by a sexual assault, Nina and her husband, Caleb, a quiet and methodical stone mason, are shattered, ripped apart by an enraging sense of helplessness in the face of a futile justice system that Nina knows all too well.