Dan Brown (1964- ) Author. Brown is best known for the 2003 bestselling novel, The Da Vinci Code. His novels are treasure hunts set in a 24-hour period, and feature the recurring themes of cryptography, keys, symbols, codes, and conspiracy theories. His book, The DaVinci Code, Doubleday, 2003, signed on the title page. The original owner’s name on the first blank page. The dust jacket shows modest wear.