The sudden disappearance of Edwin Drood on a stormy Christmas Eve in the cathedral town of Cloisterham triggers a web of suspicion surrounding his uncle, the opium-addicted choirmaster John Jasper. Jasper, driven by obsessive desire for his pupil Rosa Bud, finds his life entangled with the Landless twins, who have recently arrived from Ceylon. The narrative, presented in a fragmented and unfinished state, explores themes of duality, addiction, and social hypocrisy within a rigid Victorian framework. The story utilizes a third-person omniscient perspective to examine the psychological decay of its central figures while maintaining a dense, atmospheric tension throughout the town of Cloisterham.

Discussion often centers on the inherent frustration and intrigue caused by the novel's unfinished state, which has invited decades of speculation regarding the intended conclusion. Readers frequently highlight the shift in Dickens's style toward a darker, more psychological focus compared to his earlier, more sentimental works. Critics often analyze the effectiveness of the atmospheric setting in Cloisterham as a reflection of the characters' internal moral conflicts. The work remains a subject of intense academic study, with many enthusiasts attempting to reconstruct the missing plot points based on the existing clues provided in the text.