To save a life, you must first crack the code ...A mysterious invitation brings Professor Robert Langdon to Washington DC. But all is not as it seems in this powerful city. An ancient organization plans to reassert itself. And he is the only man standing in its way. If he is to prevent a terrible plan being executed, Langdon must decipher a series of increasingly bloody clues. But first he has to make sure he stays alive..."Impossible to put down ...Another mind-blowing Robert Langdon story". (New York Times).