Flora Mancini has been happily married for more than twenty years. But everything she thought she knew about herself, her marriage, and her relationship with her best friend, Margot, is upended when she stumbles upon an envelope containing her husband's wedding ring - the one he claimed he lost one summer when their daughter, Ruby, was five. A warm, incisive new novel about the enduring bonds of marriage and friendship. From the author of the New York Times bestseller "The Nest".