Truth  or  Fiction ?

Dan Brown admits that his book Da Vinci Code is fictional. 
However, the Book and Website strongly suggest that his book is factual and historically accurate.

Good Morning America Interview:

Charlie Gibson: You wrote this book as fiction. If you had written it as non-fiction, would it have been any different?

Dan Brown: I don't think so...I began the research for the DaVinci Code as a skeptic.
I entirely expected, as I researched the book, to disprove this theory.
And after numerous trips to Europe, about two years of research, I really became a believer ...
(Good Morning America, ABC, November 3, 2003, interview)

Today Show

Matt Lauer asks Brown: How much of this is based on reality in terms of things that actually occurred? 

Dad Brown reply: Absolutely all of it.
(On NBC's Today Show, June 9, 2003)

Matt Lauer: How much of this is based on reality in terms of things that actually occurred?

Dan Brown: Absolutely all of it. Obviously, there are—Robert Langdon is fictional, but all of the art, architecture, secret rituals, secret societies, all of that is historical fact.
["NBC Today Interview". NBC Today. 2003-06-03.]

CNN Sunday Morning

Martin Savidge: When we talk about da Vinci and your book, how much is true and how much is fabricated in your storyline?

Dan Brown: 99 percent of it is true. All of the architecture, the art, the secret rituals, the history, all of that is true, the Gnostic gospels. All of that is … all that is fiction, of course, is that there's a Harvard symbologist named Robert Langdon, and all of his action is fictionalized. But the background is all true.
["Interview With Dan Brown". CNN Sunday Morning (CNN). 2003-05-25.]

From Dan Brown's own web site we find the following Images :

In the above quote Mr. Brown seems to suggest that his version of history is based on unbiased scholarship. 
Nothing is further from the truth !

In this quote above, Mr. Dan Brown seems to claim that he believes that those who attempt to "DISPROVE" the claims he makes in his book are wrong.  From that one would be led to conclude that Mr. Brown contends he is presenting the truth in his book.

A small selection of factual errors, that is lies, including one about the Priory of Sion is listed here.

However, his depiction of Opus Dei was anything BUT fair or balanced. See Opus Dei