by John Buchan
In Mr Standfast (1919), the third of the four novels featuring Richard Hannay, Hannay is brought out of the battlefield to perform the desperate task of tracking down and destroying a network of German spies. Set in the later years of World War I, Brigadier-General Hannay is recalled from active service on the Western Front to undertake a secret mission hunting for a dangerous German agent at large in Britain. He is forced to work undercover disguised as a pacifist, roaming the country...