A battle at Dorking, that never happened, and German spies that never existed were a cause of great anguish to the British in the early part of the twentieth century. The result would be the creation a secret service, the rounding up of foreign nationals and an explosion in the popularity of the spy genre; which would manifest itself with classics such as John Buchan's 'The Thirty-Nine Steps' Dur: 17mins  File .mp3