Christmas Murder Mystery Boxed-Set gathers nineteenth- and early twentieth-century crime fiction around the charged seasonal setting of Christmas, where domestic warmth, charity, inheritance, travel, and festivity become occasions for concealment and detection. Its range encompasses Gothic suspense, sensation fiction, puzzle-based mysteries, comic tales, gentleman-thief adventures, and the emerging golden-age detective story. Amid country houses, crowded holiday gatherings, and shadowed urban interiors, the collection demonstrates how Christmas can heighten both communal intimacy and criminal suspicion. The volume brings together writers central to the formation of popular detective and mystery literature on both sides of the Atlantic. Its contributors include architects of the modern detective tale, influential practitioners of the sensation novel and Gothic mode, and major figures associated with the clue-centered traditions that would shape twentieth-century crime writing. Their varied social settings, investigative methods, and narrative voices reveal the genre's development from melodramatic secrecy and amateur inquiry to more formalized deduction, while also registering contemporary concerns about class, family, property, and respectability. Ideal for readers of classic crime fiction and students of literary history, this boxed set offers an unusually broad survey of seasonal mystery in a single library. Read together, these works invite comparison across styles, periods, and national traditions, making the volume both an entertaining holiday companion and a valuable introduction to the enduring dialogue between Christmas custom and criminal intrigue.