In April 2009, Dan Brown announced The Lost Symbol, the sequel to The Da Vinci Code, will be published in autumn of 2009.Guardian: Da Vinci Code Sequel, The Lost Symbol (April 20, 2009)

The film adaptation of the prequel to The Da Vinci Code, Angels and Demons, will be released on May 15, 2009.Sony Pictures: Angels and Demons Film

• Harvard symbologist Profession Robert Langdon was in Paris for business when he was awakened by a late-night phone call summoning him to the Louvre. An elderly curator was murdered inside the museum and the police are puzzled by the gruesome and cryptic clues.

• Considered to be a potential suspect, Langdon goes on the run with the curator's granddaughter and a professional cryptographer, Sophie Neve. The late curator was a high-ranking member of the secret society, the Priory of Sion. Previous members of the Priory included Sir Isaac Newton, Botticelli, Victor Hugo, and Leonardo da Vinci.

• While on the run from French police, Langdon and Neve attempt to decode the hidden messages with the works of Da Vinci in order to protect the secrets of the Priory.Dan Brown: The Da Vinci Code

• 1998: Digital Fortress
• 2000: Angels and Demons
• 2001: Deception Point
• 2003: The Da Vinci Code
• Fall 2009: The Lost SymbolGuardian: Da Vinci Code Sequel, The Lost Symbol (April 20, 2009)

• Tom Hanks as Dr. Robert Langdon
• Audrey Tautou as Agent Sophie Neveu
• Ian McKellen as Sir Leigh Teabing
• Jean Reno as Captain Bezu Fache
• Paul Bettany as Silas
• Alfred Molina as Bishop Manuel Aringarosa