Offered: Dan Brown . Angels & Demons . A bestselling mystery-thriller . Pocket Books and Corgi Books . introduces Robert Langdon, who recurs as the protagonist of Brown's subsequent novels . conspiracies of secret societies, a single-day time frame, and the Catholic Church . Ancient history, architecture . A film adaptation was released on May 15, 2009 Followed by: The Da Vinci Code . Copyright May 2000 . 572 Pages . Measures 9.5 X 6.5 inches . Hardback