Ahead of paperback publication, Waterstones has done a ‘Waterstones says’ review of Witchfinder: ‘A dazzling, authentic spy story set in Swinging London at the height of the Cold War, Witchfinder hymns a shadowy world of traitors at the heart of the secret service and disillusioned spooks brought in from the cold. Written with the flair of le Carre and the realism of Deighton, this is a future espionage classic in the making.’