sense. Dan Brown is an American author of thriller fiction, best known for the 2003 bestselling novel, The Da Vinci Code. Brown is interested in cryptography, codes, and keys. Currently his novels have been translated into many languages. Dan Brown is an American author of thriller fiction, best known for the 2003 bestselling novel, The Da Vinci Code. Brown is interested in cryptography, codes, and keys. Currently his novels have been translated into many languages. Although many see Dan Brown's books as anti-Christian, Brown is a Christian who says that his book The Da Vinci Code is simply "an entertaining story that promotes spiritual discussion and debate" and suggests that the book may be used "as a positive catalyst for introspection and exploration of our faith."