The Rule of Four

Famous for its hypnotic power over those who study it, the book may finally reveal its secrets - to Tom Sullivan, whose father was obsessed with it, and Paul Harris, whose future depends on it - when an ancient diary surfaces. Armed with the final clue, the two friends delve into a world of forgotten erudition, strange sexual appetites, and terrible violence. But just as they begin to realize the magnitude of their discovery, the campus is rocked: a longtime student of the book has been murdered.