: The "Grail" is not a physical cup, but a lineage. The story explores the theory that Jesus and Mary Magdalene were married and had a child, whose descendants became the Merovingian dynasty of France.
: The story posits that Leonardo da Vinci hid clues within his masterpieces. In The Last Supper , the figure to the right of Jesus is not the Apostle John, but Mary Magdalene. The "V" shape formed between them represents the chalice—the Holy Grail. Da Vincio Kodas
As Langdon and Sophie decode poems and manipulate cryptexes, they move from Paris to London and finally to the in Scotland. : The "Grail" is not a physical cup, but a lineage