The Eyre Affair, written by Jasper Fforde, is a delightful alternative history mystery book set in a world where literature is taken to a whole new level. The story follows Thursday Next, a literary detective who can enter books and interact with fictional characters. When Jane Eyre, the beloved protagonist of Charlotte Brontë's novel, goes missing, Thursday must solve the mystery and prevent a literary catastrophe. Fforde's witty writing style and imaginative world-building make The Eyre Affair a delightful and whimsical read for book lovers and mystery enthusiasts alike.