When the curator of the louvre is found murdered, his body lying in the form of the vitruvian man, the authorities decide to contact the harvard symbologist, dan brown to help solve the case. What ties did the victim have with the ancient cult headed by isaac newton and botticelli? Together with the victim’s granddaughter, robert langdon must decipher codes designed by the victim, hiding a secret more powerful than any other, and learn the secret that many have died to protect. In doing so, he will come face to face with the true nature of the holy grail, and discover the truth behind the stories of jesus christ.