The term "historical whodunnit" is commonly used to describe fiction books or films that revolve around a mystery set in the past. There are several synonyms to describe this genre, including historical mystery, period crime, vintage suspense, and historical crime fiction. These terms highlight the genre's focus on suspense and crime in a historical setting. Other synonyms for the term "whodunnit" include detective story, mystery novel, and crime fiction, which collectively emphasize the element of mystery surrounding the central plot. Overall, these synonyms demonstrate the diversity and rich history of the historical whodunnit genre.