Their children are friends first. They hit it off immediately, as kids do. And so the parents are forced to get to know each other. Three wildly different couples. Three marriages, floundering. There are barbecues, dinner parties, a holiday in Greece. An affair begins, resentments flare, and despite it all the three women become closer. Unnoticed their children run wild. The couples are so busy watching each other that they forget to watch their children. Until tragedy strikes. But the summer wont be over until our story twists, and twists again, while three families search desperately for answers. Because while they have been looking the other way, evil has crept into their safe little world and every parent's biggest nightmare is about to come true . . . Big Little Lies meets Little Fires Everywhere in this tense domestic thriller from the bestselling author of Richard and Judy sensation Daughter.