Silas/Young Silas – (real name: Simon) is one of the antagonist in the story, even though he isn’t evil in his true nature.
She was raised by her grandfather, Jacques Sauniere, after her parents were killed in a car accident. She is also a cryptographer at the Central Directorate Judicial Police(DCPJ). Sophie Neveu – the granddaughter of Jacques Sauniere, the curator of the Louvre Museum. He is also the main protagonist of the story. Robert Langdon – a professor in History of Art and Symbology at Harvard University. Unless Langdon and Neveu can decipher the labyrinthine puzzle in time, the Priory’s most kept and hidden secret, and a stunning historical truth, will be lost forever. In a puzzle filled, breathless race through Paris, London, and beyond, Robert Langdon and Sophie Neveu match wits with a faceless leader who appears to work for Opus Dei–a clandestine Vatican-sanctioned Catholic sect believed to have long planned to seize Priory’s secret. The Louvre curator has sacrificed his life to protect the Priory’s most sacred trust: the location of a vastly important religious relic, hidden for so many centuries. Robert Langdon joins forces with Sophie Neveu a French cryptologists, and they learned that the curator, Jacques Sauniere, was involved in the Priory of Sion–an actual secret society whose members included the famous scientist Sir Isaac Newton, Boticelli, Victor Hugo, and the famous Italian Leonardo Da Vinci, among others. Solving this enigmatic riddle, Robert Langdon is stunned to discover that it leads to a trail of clues and directions hidden in the works of Leonardo Da Vinci…clues that are visible to the eye…and yet ingeniously and cleverly disguised by the artist. Near the body, police officers have found a baffling cipher. Robert Langdon, a famous Harvard symbologist (and story’s protagonist), receives an urgent late-night phone call: the curator of the Louvre Museum has been murdered inside the Grand Gallery of the Museum. He also left a code, a random sequence of numbers, and two lines of text on the ground in invisible ink, hidden from the naked eye. Thus, recreating Da Vinci’s famous Vitruvian Man. Realizing that his time is running out quickly and that he must pass on his important secret, Jacques Sauniere painted a pentacle on his stomach using his own blood, draws a circle on the floor with his blood and drags himself to the center of it.
However, Jacques Sauniere has lied about the location of the Holy Grail. After Sauniere told him, Silas shot him through the stomach and left him there to bleed to death.
Silas demands to know where the Holy Grail is. In the Louvre Museum, a monk of the group Opus Dei named Silas murdered Jacques Sauniere, the museum’s curator.