Greenmantle

Set against the backdrop of World War I, the story follows Hannay as he investigates unsettling rumors of an uprising in the Muslim world. His journey through hostile territories leads him to Constantinople, where he reunites with his friend Sandy. Together, they must navigate a web of intrigue and thwart German strategies that exploit religious tensions, culminating in the intense battle of Erzurum. The narrative weaves themes of friendship, loyalty, and the complexities of war.