Symbologist Robert Langdon returns in this new thriller follow-up to The Da Vinci Code. As the story opens, Harvard symbologist Robert Langdon is summoned unexpectedly to deliver an evening lecture in the U.S. Capitol Building. Within minutes of his arrival, however, the night takes a bizarre turn. A disturbing object--artfully encoded with five symbols--is discovered in the Capitol Building. Langdon recognizes the object as an ancient invitation...