The Rule of Four (Hardcover)

By Dustin Thomason, Ian Caldwell

The Dial Press, 9780385337113, 384pp.

Publication Date: May 11, 2004

Other Editions of This Title:
Paperback (8/21/2012)
Hardcover, Spanish (9/1/2004)
Mass Market Paperback (6/28/2005)
Audio Cassette (9/13/2004)
Prebound (8/21/2012)

List Price: 24.00*
* Individual store prices may vary.


An ivy league murder, a mysterious coded manuscript, and the secrets of a Renaissance prince collide memorably in The Rule of Four—a brilliant work of fiction that weaves together suspense and scholarship, high art and unimaginable treachery.

It's Easter at Princeton. Seniors are scrambling to finish their theses. And two students, Tom Sullivan and Paul Harris, are a hair's breadth from solving the mysteries of the Hypnerotomachia Poliphili—a renowned text attributed to an Italian nobleman, a work that has baffled scholars since its publication in 1499. For Tom, their research has been a link to his family's past—and an obstacle to the woman he loves. For Paul, it has become an obsession, the very reason for living. But as their deadline looms, research has stalled—until a long-lost diary surfaces with a vital clue. And when a fellow researcher is murdered just hours later, Tom and Paul realize that they are not the first to glimpse the Hypnerotomachia 's secrets.

Suddenly the stakes are raised, and as the two friends sift through the codes and riddles at the heart of the text, they are beginnning to see the manuscript in a new light—not simply as a story of faith, eroticism and pedantry, but as a bizarre, coded mathematical maze. And as they come closer and closer to deciphering the final puzzle of a book that has shattered careers, friendships and families, they know that their own lives are in mortal danger. Because at least one person has been killed for knowing too much. And they know even more.

From the streets of fifteenth-century Rome to the rarified realm of the Ivy League, from a shocking 500 year-old murder scene to the drama of a young man's coming of age, The Rule of Four takes us on an entertaining, illuminating tour of history—as it builds to a pinnacle of nearly unbearable suspense.

Praise For The Rule of Four

"Caldwell and Thomason have created a stunning first novel; a perfect blend of suspense and a sensitive coming of age story. If Scott Fitzgerald, Umberto Eco, and Dan Brown teamed up to write a novel, the result would be The Rule of Four. An extraordinary and brilliant accomplishment—a must read.”—Nelson DeMille

“A marvelous book with a dark Renaissance secret in its coded heart … Profoundly erudite … the ultimate puzzle book.” —The New York Times Book Review

"Think Dan Brown by way of Donna Tartt and Umberto Eco ... There are murders, romances, dangers and detection, and by the end the heroes are in a race not only to solve the puzzle, but also to stay alive. Readers might be tempted to buy their own copy of the Hypnerotomachia and have a go at the puzzle." —Publishers Weekly, starred review

“As much a blazing good yarn as it is an exceptional piece of scholarship. A smart, swift, multi-textured tale that both entertains and informs.” —San Francisco Chronicle

"An astonishingly good debut ... Academic evil stalks the campus and no one is safe … Intricate, erudite, and intensely pleasurable."—Kirkus Reviews, starred review

"The authors, best friends since childhood, have made an impressive debut, a coming-of-age novel in the guise of a thriller." —Booklist

“This debut packs all the esoteric information of The DaVinci Code but with lovely writing reminiscent of Donna Tartt’s The Secret History…a compulsively readable novel.” —People, Critic’s Choice/4 Stars

"In The Rule of Four, Caldwell and Thomason have written a truly satisfying literary thriller ... DO believe the hype. The intense college friendships and their inevitable decline are woven into the thriller's plot. The novel has a darkness that recalls Umberto Eco's monastery thriller, The Name of the Rose, and twinges of Donna Tartt's debut novel set in a boarding school, Secret History. —The New York Post