"Behind The Lost Symbol is the definitive guide to the history and ideas underpinning Dan Brown's phenomenal new novel. It will give his legions of readers essential insights into the rituals, the settings, the symbols, the history and the science behind the book. Among its fascinating entries, all cross-referenced to other articles as well as to Brown's novel and its prequels, readers will learn the facts behind: the influence of Freemasonry on America's Founding Fathers; the connection with Kryptos, the enigmatic sculpture in the CIA's headquarters at Langley, Virginia; [and,] the Masonic architecture of Washington DC."--Back cover.