The Rule of Four

“Profoundly erudite … the ultimate puzzle-book.”—The New York Times Book Review

“One part The Da Vinci Code, one part The Name of the Rose and one part A Separate Peace … a smart, swift, multitextured tale that both entertains and informs.”—San Francisco Chronicle

“Ingenious … The real treat here is the process of discovery.”—The New York Times

“Compulsively readable.”—People (4 stars)

“If F. Scott Fitzgerald, Umberto Eco, and Dan Brown teamed up to write a novel, the result would be The Rule of Four.”—Nelson DeMille

Ian Caldwell is the author of a forthcoming novel set inside the Vatican. He graduated Phi Beta Kappa in European history from Princeton University, and lives near Washington, D.C., with his wife and three sons.

Dustin Thomason is also the author of 12.21. He graduated from Harvard College and received his M.D. from Columbia University. Thomason has written and produced several television series, including Lie to Me. He lives in Venice Beach, California.

The two have been best friends since they were eight years old.

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