CORRECTS PUBLISH DATE TO SEPT. 5 FROM SEPT. 6 - FILE - This Sept. 13, 2011, file photo shows British author John Le Carre at the UK film premiere of "Tinker Tailor Soldier Spy," in London. After a hiatus of more than 25 years, le Carre is again writing about one of the world’s most famous fictional spies. Viking said Tuesday, March 7, 2017, that le Carre’s “A Legacy of Spies” will come out Sept. 5. (AP Photo/Sang Tan, File)
David Cornwell, who writes under the pen name of John le Carre, came to literary acclaim in 1963 with his novel “The Spy Who Came In From the Cold.” The book's moral ambiguity was jarring to many at the time.