"A broken promise reveals a terrifying legacy in this electrifying novel from the New York Times bestselling author of When All the Girls Have Gone. A painter of fiery, nightmarish visions throws herself into the sea--but she'll leave some of her secrets behind ... Seattle gallery owner Virginia Troy has spent years battling the demons that stem from her childhood time in a cult and the night a fire burned through the compound, killing her mother....

Harvard symbologist Robert Langdon discovers evidence of the resurgence of the most powerful underground organization in history, the Illuminati. Upon learning of an unstoppable terrorist act against the Vatican, Langdon travels to Rome and joins forces with Italian scientist Vittoria Vetra and together they will follow the 400-year-old Path of Illumination that leads to the Vatican's only chance for survival.