"The Ghost of Eternal Polygamy" delves into the complex and often painful legacy of polygamy within the Mormon faith. The author, Joanna Brooks, examines how the historical practice of plural marriage continues to influence the lives of modern Mormon women and men, creating a lingering sense of unease and conflict. Through personal narratives and historical analysis, Brooks highlights the emotional toll that the concept of eternal polygamy has taken on relationships and individual identities within the church. The book explores the disparity between the church's teachings and the lived experiences of its members. Brooks argues that many struggle with the ideal of polygamous relationships, often feeling trapped between their faith and personal beliefs about love and marriage. This legacy also raises questions about gender roles and the expectations placed on women, who historically bore the brunt of polygamous practices.