 In the movie, Robert Langdon, a professor of religious symbology from Harvard University, is the prime suspect in the grisly and unusual murder of Louvre curator Jacques Saunière.In the body, the police find a disconcerting cipher and start an investigation.A noted British Grail historian named Sir Leigh Teabing tells them that the actual Holy Grail is explicitly encoded in Leonardo da Vinci's wall painting, "The Last Supper".