Ten years ago, Ian Caldwell and Dustin Thomason’s The Rule of Four became a literary phenomenon, which spent forty-nine weeks on the New York Times bestseller list, sold nearly two million copies in North America, and was translated into thirty-five languages. Now, after a decade of painstaking primary research, Ian Caldwell returns with a masterful new thriller, The Fifth Gospel (Simon & Schuster), in which a lost gospel, a contentious relic, and a dying pope’s final wish converge to send two brothers on an intellectual quest to untangle Christianity’s greatest historical mystery.
