The Walls Have Ears

“[A] remarkable book” —Nick Rennison, Daily Mail (Book Of The Week)

“Fascinating and intriguing.”—Mark Lardas, The Galveston Daily News

“A fascinating, well-researched glimpse into a hitherto neglected corner of the intelligence history of the Second World War."—Nigel West, author of Double Cross in Cairo

"Fry shines a revealing light into a dark and forgotten corner of the British wartime intelligence effort, with truly remarkable results."—Mark Felton, author of Operation Swallow

“Fry has uncovered an astonishing story of wartime espionage, featuring prisoners of war, microphones hidden in vegetation and interrogations so subtle that the subjects never realised what was happening. Almost as amazing as the operation itself is that it stayed secret so long.”—Robert Hutton, author of Agent Jack

“Fry traces the development and growing sophistication of interrogation technique during the Second World War, the overlay of apparent British eccentricity and creative deception on a determined intelligence operation … Fascinating.”—Michael Jago, author of The Man Who Was George Smiley