Green cloak

In the novel "The Green Gown" by John Buchan, the reader is immersed in exciting events taking place during the First World War. The British leadership receives exciting news about a German plan based on a mysterious figure known as "The Green Mantle," who will supposedly seek the help of the expected prophet to mobilize the Muslims against the Allied armies. The command sends the brave Officer Richard Hannay into the heart of the enemy in an attempt to uncover the facts and thwart this dar...