Dan Brown to unveil Washington’s Masonic past

A sequel to the blockbuster thriller “The Da Vinci Code” is set to lift the veil on mysterious Freemason symbols carved into the very fabric of the historic streets and buildings of the US capital. Novelist Dan Brown has set the new adventures of his hero, scholar-adventurer Robert Langdon, right in the heart of Washington, which could reveal some astonishing facts for history buffs.