In this week's magazine, New York attempts to crack Dan Brown's Da Vinci Code follow-up, The Lost Symbol: Sam Anderson explains how Brown feeds the brain; Dan Kois talks to Brown expert Dan Burstein; Rebecca Milzoff traces the Code backlash; Boris Kachka wonders how Brown became Brown; and Ira Boudway recounts Brown's many beefs. Also, Peter W. Kaplan ponders David Letterman's triumph over Leno. Jason Gay interviews interviewers Jimmy Fallon and Dick Cavett. Adam Sternbergh explains late night's future in daytime. Mike Flaherty and Mary Kaye Schilling chart the history of the post-11:30 time slot. David Edelstein reviews a trio of people-slamming documentaries. Anderson reviews horrified Jane Austen novel Sense and Sensibility and Sea Monsters. Schilling chats with No Impact Man's wife, Michelle Conlin. Tim Murphy interviews Paul Rudnick on his new book, I Shudder: And Other Reactions to Life, Death, and New Jersey. Erica Orden talks to one-man husband-wife team Genesis P-Orridge. Milzoff raps with newly minted Philharmonic member Trey Anastasio. And Katie Goldsmith chats with Kings of Leon's Caleb Followill.