Fact-Checking Dan Brown's 'Inferno'

Many books have been published on the numerous mistakes in Dan Brown’s past books, especially The Da Vinci Code. The novel begins with a statement: “FACT, the Priory of Sion—a European secret society founded in 1099—is a real organization.” But there is little in The Da Vinci Code that is correct and well researched. For instance, the Priory of Sion is not a real organization, but the product of an infamous forgery by a Frenchman named Pierre Plantard, who planted fake medieval documents in order to convince people that he should be made king of France.