A deadly race for the Vatican's oldest secret fuels New York Times bestseller Steve Berry's next international Cotton Malone thriller: The Malta Exchange."Berry is the master scientist with a perfect formula." - Associated PressThe pope is deadA conclave to select his replacement is about to begin. Cardinals are beginning to arrive at the Vatican, but one has fled Rome for Malta in search of a document that dates back to the 4th century and Constantine the Great. Former Justice Department operative, Cotton Malone, is at Lake Como, Italy, on the trail of legendary letters between Winston Churchill and Benito Mussolini that disappeared in 1945 and could re-write historyBut someone else seems to be after the same letters and, when Malone obtains then loses them, he's plunged into a hunt that draws the attention of the legendary Knights of Malta.The knights have existed for over nine hundred years, the only warrior-monks to survive into modern timesNow they are a global humanitarian organi