The novel explores an alternative religious history, whose central plot point is that the Merovingian kings of France were descended from the bloodline of Jesus Christ and Mary Magdalene , ideas derived from Clive Prince's The Templar Revelation and books by Margaret Starbird.
The book also refers to The Holy Blood and the Holy Grail , although Brown stated that it was not used as research material. The Da Vinci Code provoked a popular interest in speculation concerning the Holy Grail legend and Mary Magdalene's role in the history of Christianity. The book has been extensively denounced by many Christian denominations as an attack on the Catholic Church , and also consistently criticized by scholars for its historical and scientific inaccuracies.
The novel became a massive worldwide bestseller , [ 3 ] selling 80 million copies as of [update] , [ 4 ] and has been translated into 44 languages. In , a film adaptation was released by Columbia Pictures. The message includes a Fibonacci sequence out of order and an anagram: "O, draconian devil! Oh, lame saint! Find Robert Langdon", which Fache had erased prior to Langdon's arrival.
However, "P. She understands that her grandfather intended Langdon to decipher the code, which leads to Leonardo da Vinci's Mona Lisa , which in turn leads to his painting Madonna of the Rocks.
They find a pendant that holds the address of the Paris branch of the Depository Bank of Zurich. Neveu and Langdon escape from the police and visit the bank. In the safe deposit box, which is unlocked with the Fibonacci sequence, they find a box containing the keystone: a cryptex , a cylindrical, hand-held vault with five concentric, rotating dials labeled with letters.
