"Historical Mystery Books" refers to a genre of literature that combines elements of mystery, crime, or suspense with a historical backdrop. These narratives often revolve around a mysterious event or situation set in a particular historical period, integrating factual historical details with fictional mystery elements. This category can also include mystery science fiction books, where the mystery is set in a historically accurate, yet futuristically imagined setting. These books engage readers with their compelling blend of historical authenticity, suspenseful plots, and intricate mysteries to solve.