The wait is over. "The Lost Symbol," the follow-up to Dan Brown's 2003 mega-seller, "The Da Vinci Code," is here -- and you don't have to be a Freemason to enjoy it (although it wouldn't hurt).Like "Angels and Demons," published in 2000, and "The Da Vinci Code," "The Lost Symbol" solves puzzles, analyzes paintings and reveals forgotten histories -- all so that Brown's tireless hero, Robert Langdon, can find a legendary Masonic treasure despite special ops squads that are dogging him and a bizarre killer who has kidnapped his dear friend and mentor.There is one mystery, though, that remains unsolved after three books.Will Langdon ever get to rest?You'd think a 46-year-old Harvard symbologist's most strenuous chores would be grinding his Sumatran coffee beans in the morning or persuading bored undergrads to appreciate hidden meanings in the world around them. Langdon does these things, but he's also the guy who survived an antimatter explosion at the Vatican and a Paris manhunt and uncov