From the acclaimed author of Pack Up the Moon comes a poignant and beautiful novel about love, loss, and the unbreakable bonds of family—particularly those between mothers, daughters, and sisters. Ten years ago, Nora Glass started writing essays about being a single mother of a six-year-old daughter. Her weekly column made her a household name, and over the years, her fans have watched Ellie grow from a toddler to a teenager. But now Nora is facing a problem that can’t be overcome. Diagnosed with a devastating disease that will eventually take away who she is, she is scared for herself, but even more frightened about what this will mean for her sixteen-year-old daughter. Now Nora has no choice but to let go of her hard-won image as a competent, self-assured woman, and turn to the one person who has always relied on her twin sister, Mariana. Nora and Mariana couldn’t be more different from one another, and they’ve always had a complicated relationship. But now the two sisters will have to summon the strength to help them all get through a future none of them could have ever imagined, while uncovering the joy and beauty that was always underneath.