"Doomsday Book" is a science fiction novel by Connie Willis, published in 1992. The novel tells the story of a time-traveling historian named Kivrin, who travels back in time to 14th century England to study the period firsthand. However, a malfunction in the time machine causes Kivrin to arrive in the midst of the Black Death pandemic, and she becomes stranded in a world of disease and death. As Kivrin struggles to survive and make her way back to her own time, her colleagues in the future work to rescue her and repair the damaged time machine. The novel deals with themes of mortality, human resilience, and the role of history in shaping our understanding of the present. It is considered a classic of the science fiction genre and has won numerous awards for its writing and storytelling.