The Walls Have EarsA history of the elaborate and brilliantly sustained World War II intelligence operation by which Hitlers generals were tricked into giving away vital Nazi secrets A great book.Michael Goodman, BBC History Magazine An astonishing story of wartime espionage.Robert Hutton, author of Agent Jack At the outbreak of World War II, MI6 spymaster Thomas Kendrick arrived at the Tower of London to set up a top secret operation: German prisoners cells were to be