A bestselling 2003 novel by Dan Brown, adapted and released as a major motion picture in 2006, "The Da Vinci Code" revolves around a conspiracy based on elements of Leonardo's "Last Supper" and other works. A preface to the novel claims that depictions of artworks, secret societies and rites described within the novel are factual. For this reason much of the content of the novel has been widely accepted by readers as authoritative. Because the theme involves a conspiracy within the Church over the life of Jesus and the suggestion that the Church has hidden the facts of his marriage, there has been a strong reaction against the novel and much material published examining and refuting its claims.