The Eyre Affair, written by Jasper Fforde, is an alternative history mystery set in a world where literature is taken very seriously. The story follows a literary detective as she investigates the theft of the original manuscript of Jane Eyre. As she delves into the case, she uncovers a plot that could alter the course of literary history. With its clever blend of literary references and thrilling mystery, The Eyre Affair has become a beloved book among fans of alternative history and mystery genres.