Inferno is a 2013 mystery thriller novel by American author Dan Brown and the fourth book in his Robert Langdon series, following Angels & Demons, The Da Vinci Code and The Lost Symbol. The book was published on May 14, 2013, ten years after publication of The Da Vinci Code (2003), by Doubleday . 
Character development. Dan Brown created the character as a fictional alter ego of himself or "the man he wishes he could be". Brown himself was born June 22, 1964, in Exeter, New Hampshire, and the fictional Langdon is described as having been born on June 22, also in Exeter, and attending the same school as Brown did, Phillips Exeter Academy.
Mar 18, 2003 · Dan Brown is the author of numerous #1 bestselling novels, including The Da Vinci Code, which has become one of the best selling novels of all time as well as the subject of intellectual debate among readers and scholars. Brown’s novels are published in 52 languages around the world with 200 million copies in print.
Dulcy: Directed by S. Sylvan Simon. With Ann Sothern, Ian Hunter, Roland Young, Reginald Gardiner. A dizzy young woman aranges to turn her inventor-boyfriend's vacation into a chance meeting with a possible investor who happens to be her brother's future father-in-law.