The Secret of Secrets

The world's most celebrated thriller writer returns with his most stunning novel yet-a 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 Solomon-a prominent noetic scientist with whom he has recently begun a relationship. Katherine is on the verge of publishing an explosive book...