A nerve-wracking audition for a summer ballet workshop in Boston reminds fifteen-year-old Cass how much she wishes her mom hadn't died when she was a baby. Her dad isn't exactly Mr. Encouragement when it comes to her dancing, and he shuts down whenever she asks about her mother. Cass feels as though her life is a puzzle with a giant piece missing. Dancing has become her safe place where she doesn't have to think about why her father won't discuss...