Isabel is delighted with her new baby Magnus, but her toddler Charlie refuses to acknowledge his little brother. Even as she navigates this new family dynamic, Isabel's old acquaintance Bea Shandon comes to seek her help. Something of a matchmaker, Bea has introduced a wealthy female friend to a cosmetic surgeon, but soon uncovers information leading her to doubt his motives. In her 11th case (after The Novel Habits of Happiness), Isabel agrees to find out more, but as her enquiries take an unexpected turn, she starts to wonder whom exactly she should be investigating.