The story revolves around the lives of two sisters-in-law, Jacqueline and Suzanne, who are married to brothers, Lionel and Maurice. The novel delves into their contrasting personalities, their marriages, and their experiences within their respective families.Gertrude Atherton examines societal norms, women's roles, and the interplay of relationships within the context of the era. The narrative highlights the challenges faced by the two women as they navigate their relationships, personal ambitions, and societal expectations."The Sisters-In-Law" is recognized for its exploration of gender roles, family dynamics, and the changing landscape of society during the early 20th century. Atherton's writing style captures the nuances of human relationships and provides insights into the struggles and aspirations of women during that time period.The novel remains a significant work in Gertrude Atherton's literary repertoire, offering readers a glimpse into the lives of women and the complexities of family ties in the early 20th century.