"Aria and Perry, two teens from radically different societies--one highly advanced, the other primitive--hate being dependent on one another until they overcome their prejudices and fall in love, knowing they can't stay together"--

Inspired by her late grandmother, 13-year-old Nina spends a summer secretly doing good deeds for her neighbors and enjoying the changes she brings about, even as she's dealing with changing friendships and family issues.

On a cool June morning, a woman is walking her dog in the idyllic coastal village of Salten along a tidal estuary known as the Reach. Before she can stop him, the dog charges into the water to retrieve what first appears to be a wayward stick, but to her horror, turns out to be something much more sinister. The next morning, three women in and around London -- Fatima, Thea, and Isabel -- receive the text they had always hoped would never come, from...