Basil Thomson

First World War espionage was a fascinating and dangerous affair, spawning widespread paranoia in its clandestine wake. The hysteria of the age, stoked by those within the British establishment who sought to manipulate popular panic, meant there was no shortage of suspects. Exaggerated claims were rife: some 80,000 Germans were supposedly hidden all over Britain, just waiting for an impending (and imagined) invasion. No one could be trusted... Against...