When Susannah Breslin is a toddler, her parents enroll her in an exclusive laboratory preschool at the University of California, Berkeley, where she becomes one of over a hundred children who are research subjects in an unprecedented 30-year study of personality development that predicts who she will grow up to be. Decades later, trapped in what she feels is an abusive marriage and battling breast cancer, she starts to wonder how growing up under a microscope shaped her identity and life choices. At once bravely honest and sharply witty, this book is a compelling and provocative account of a woman’s quest to find her true self, and an unblinking exploration of why we turn out as we do.