Every summer, a girl's family drives down the same roads, passes through the same towns, and spends a week at the same beachside motel. Year after year, everything is comfortingly predictable: the families they see, the rhythm of the days, the stars, the bonfires, and even the pattern the tractor makes as it rakes the sand on their beach. But this year, something is different: the girl, our narrator, meets a new friend who shows her how to dive under...