National BestsellerAn Oprah Daily Best BookAn Indie Next PickA LibraryReads PickA probing story about the reverberations of adoption, toxic friendship and what it means to be a mother.Milwaukee Journal SentinelA stunning coming-of-age novel about friendship, mothers, and finding one's way in the world by the New York Times bestselling author of The Book of Ruth and A Map of the World.Seventeen-year-old Phoebe was never interested in her birth family. But on the cusp of her high school graduation, her adoptive mother, Greta, insists on a visit to meet her biological parents and siblings. The encounter is a jolt, a revelation that derails Phoebe.With the help of her best friend Luna, Phoebe runs awayas far as their friend Patrick O'Connor's chaotic home, where she hopes to go unnoticed among his thirteen siblings. What begins as an adolescent rebellion soon spirals into a whirlwind of transformation and self-discovery.As Phoebe grapples with her shifting identity, she must navigate the tumultuous road out of girlhood and chart a new and unknown course.