"Nanny Returns" is a novel by Emma McLaughlin and Nicola Kraus, serving as a sequel to their bestselling book, The Nanny Diaries. The story follows Nanny, who returns to New York City after several years, now a young woman with her own life and career. She encounters the X family, who are facing new challenges and complexities in their lives. As Nanny reconnects with the X family, she navigates the changes in their dynamics and her own feelings about her past. The book explores themes of family, responsibility, and the impact of societal expectations on personal choices.