Greenmantle

The book opens in November 1915, with Hannay and his friend Sandy convalescing from wounds received at the Battle of Loos. Sir Walter Bullivant, a senior intelligence officer, summons Hannay to the Foreign Office. Bullivant briefs Hannay on the political situation in the Middle East, suggesting that the Germans and their Turkish allies are plotting to create a Muslim uprising, that will throw the Middle East, India and North Africa into turmoil. Bullivant proposes that Hannay investigate the rumours, following a clue left on a slip of paper with the words "Kasredin", "cancer" and "v.I" written by Bullivant's son a spy, who was recently killed in the region.