LAST BOOK IN SERIES: ORIGIN 9780385514231The worlds most celebrated thriller writer returns with his most stunning novel yeta propulsive, twisty, thought-provoking masterpiece that will entertain readers as only Dan Brown can do.Robert Langdon, esteemed professor of symbology, travels to Prague to attend a groundbreaking lecture by Katherine Solomona prominent noetic scientist with whom he has recently begun a relationship. Katherine is on the verge of publishing an explosive book that contains startling discoveries about the nature of human consciousness and threatens to disrupt centuries of established belief. But a brutal murder catapults the trip into chaos, and Katherine suddenly disappears along with her manuscript. Langdon finds himself targeted by a powerful organization and hunted by a chilling assailant sprung from Pragues most ancient mythology.