2023 Target Book of the Year FinalistPerfect for fans of Rebecca Serle's One Italian Summer and Josie Silver's The Two Lives of Lydia Bird.Can the entire course of a life be traced back to a single instant? And can hope be found in every moment after?On a coveted two-week beach vacation, working mom Kate Baker's nine-year-old daughter, Olivia, vanishes suddenly among the waves--a heart-dropping incident that threatens to uproot her entire reality. But in the next moment, Olivia resurfaces, joyously splashing.What would I do if she didn't come up? Kate wonders. How would I live without her?In another set of circumstances that hold a different fate, Kate doesn't have to wonder. Because in that "other" world, in the pulse-pounding seconds after Olivia goes under, she doesn't come back up.Told in parallel timelines, Kate begins to live two lives--one in which Olivia resurfaces and one in which she doesn't. In the reality that follows her daughter's death, she maneuvers through every mother