Greenmantle

Set against the backdrop of World War I, Richard Hannay embarks on a dangerous mission to investigate an uprising in the Muslim world. His journey takes him through hostile territory to Constantinople, where he reunites with his friend Sandy. Together, they must navigate treacherous plots as they work to prevent the Germans from exploiting religious tensions to gain an advantage in the war, culminating in the intense battle of Erzurum. The novel blends adventure with themes of loyalty and the complexities of war.