A NEW YORK TIMES BESTSELLER and NATIONAL BESTSELLER The last novel from the incomparable John le Carré. Nat, a forty-seven-year-old veteran of Britain’s Secret Intelligence Service, thinks his years as an agent runner are over. He's back in London with his long-suffering wife, Prue, but MI6 has other plans. To tackle the growing threat from Moscow Centre, Nat is put in charge of The Haven, a defunct substation of London General with a rag-tag band of spies.       Nat's weekly badminton session with the young, introspective, Brexit-hating Ed offers respite from the new job. And it is Ed, of all unlikely people, who will take Nat and his team down the path of political anger that will ensnare them all.     Agent Running in the Field is a chilling portrait of our time, now heartbreaking, now darkly humorous, told to us with unflagging tension by the greatest chronicler of our age.