"Possession" is a novel that interweaves two storylines, one set in contemporary times and the other in the Victorian era. The contemporary plot follows two academics who uncover a secret love affair between two 19th-century poets, while the Victorian storyline presents the clandestine romance itself. As the modern scholars delve deeper into the past, they find themselves falling in love as well, mirroring the historical romance they are researching. The book explores themes of love, passion, and the power of the written word.

Set in the industrializing England of the Napoleonic wars and Luddite revolts against mechanization, this novel centers on the contrasting lives of two women: the strong-willed Shirley Keeldar, who inherits her uncle's estate and assumes a traditionally masculine role as its manager, and the more timid Caroline Helstone, who lives with her uncle, a local clergyman. The narrative explores themes of gender, social class, and industrialization, as it follows the personal and romantic trials of these women. Their stories intertwine with the local mill owner, Robert Moore, who seeks to modernize his mill despite worker unrest, and the impact of these changes on the broader community. The novel examines the role of women in society and the ways in which they navigate the challenges of love, friendship, and societal expectations during a time of cultural and economic upheaval.