A New York Times Bestselling Author -- Author of five blockbuster novels, Emily Giffin is back with an unforgettable story of two women, the families that make them who they are, and the loyalty and love that bind them. Marian Caldwell is a thirty- six- year- old television producer living her dream in New York City. With a fulfilling career and a satisfying relationship, she's convinced that her life is just as she wants it to be. But one night, Marian answers her door to find Kirby Rose, an eighteen- year- old key to a past that Marian thought was sealed off forever. From that moment, Marian's perfectly constructed world-- and her very identity-- will be shaken to its core.