When world-renowned symbologist Robert Langdon is summoned to a Swiss research facility to analyse a mysterious symbol - seared into the chest of a murdered physicist - he discovers evidence of the resurgence of the Illuminati, an ancient and powerful secret organisation. The Illuminati is now ready to carry out the final phase of its vendetta against the Catholic Church. Langdon's worst fears are confirmed when, on the eve of the Vatican's holy enclave, an Illuminati messenger announces there is an unstoppable time bomb hidden in the heart of Vatican City. With the beautiful and mysterious Italian scientist Vittoria Vetra, Langdon embarks on a frantic hunt through sealed crypts, dangerous catacombs and deserted cathedrals following a 400 year-old trail of symbols toward the long-forgotten Illuminati lair, which holds the only hope for Vatican salvation.