The Rule of Four

Tom Sullivan is about to graduate from Princeton. He's intelligent and popular, but haunted by the violent death several years earlier of his father, an academic who devoted his life to studying one of the rarest, most complex and most valuable books in the world. Since its publication in 1499, the Hypnerotomachia Poliphili has baffled scholars who have tried to understand its many mysteries. Coded in seven languages, the text is at once a passionate love story, an intricate mathematical labyrinth, and a tale of arcane brutality. Paul Harris, Tom's roommate, has deeply personal reasons of his own for wanting to unveil the secrets the book hides.
When a long-lost diary surfaces, it seems the two friends have found the key to the labyrinth - but when a fellow researcher is murdered only hours later, they suddenly find themselves in great danger. And what they discover embedded in the text stuns them: the passion of a Renaissance prince, a hidden crypt, and a secret worth dying to protect.

Depuis 1499, des savants tentent de décoder un chef-d'oeuvre de la Renaissance, Le Songe de Poliphile. Ecrit en cinq langues, orné de gravures érotiques et violentes, ce texte a résisté à tous les assauts, brisé des destins, des amitiés et des vies. Pourtant, sur Campus de Princeton, pendant le weekend du vendredi saint, 1999, deux étudiants, Tom Sullivan et Paul Harris essaient de résoudre le mystère que contient ce texte. Au fil de messages cachés, ils découvrent l'histoire d'un prince du Quattrocento et l'existence d'une crypte secrète qui recèle des trésors inouïs. Ils croyaient échapper à la malédiction de cette énigme. Mais pour la défendre, certains sont prêts à mourir, et à tuer.