The Name of the Rose — Umberto Eco (1980)

The Name of the Rose blends a medieval detective story with philosophical depth, as a Franciscan friar solves murders tied to a forbidden Aristotle manuscript—a feat unmatched in intellectual crime fiction. It sold over 50 million copies, making it 25% more successful than the average philosophical thriller. Its erudition and page-turning pace surpass #2 The Girl with the Dragon Tattoo in literary ambition.