The Holy Blood and the Holy Grail (published as Holy Blood, Holy Grail in the United States) is a book by Michael Baigent, Richard Leigh, and Henry Lincoln. The book was first published in 1982 by Jonathan Cape in London as an unofficial follow-up to three BBC Two TV documentaries that were part of the Chronicle series. The paperback version was first published in 1983 by Corgi books. A sequel to ... Wikipedia