The Rule of Four Author:Ian Caldwell & Dustin Thomason Princeton. Good Friday 1999. On the eve of graduation, two students are a hairsbreadth from solving the mysteries of the Hypnerotomachia Poliphili. Famous for its hypnotic power over those who study it, the five-hundred-year-old Hypnerotomachia may finally reveal its secrets - to Tom Sullivan, whose father was obsessed with the book, and Paul... more » Harris, whose future depends on it. As the deadline looms, research has stalled -- until an ancient diary surfaces. What Tom and Paul discover inside shocks even them: proof that the location of a hidden crypt has been ciphered within the pages of the obscure Rhnaissance text.« less