Perdue is also the author of another book, The Da Vinci Legacy.
But the main thrust of the Vanity Fair article concerns the attempts by Lewis Perdue to get Brown to acknowledge that he borrowed heavily from Perdue's book, Daughter of God. Vanity Fair also says that David Morrell, author of Fraternity of the Stone, believed that Brown borrowed material for an earlier novel, Angels and Demons. Brown's editor at publisher Doubleday is quoted as saying that under the fair-use principle of copyright law, he was allowed to use Rosheim's words. But Vanity Fair magazine has raised several new examples of instances where Brown is alleged to have copied an exact passage from the paper Leonardo's Lost Robot, written by robotics expert and scholar Mark Rosheim. It has already withstood two legal challenges - one in the US and one in Britain. NEW questions have been raised about the originality of Dan Brown's international bestseller, The Da Vinci Code.
