Greenmantle by John Buchan

Greenmantle is the second of five Richard Hannay novels by John Buchan, first published in 1916 by Hodder & Stoughton, London. It is one of two Hannay novels set during the First World War, the other being Mr Standfast (1919); Hannay’s first and best-known adventure, The Thirty-Nine Steps (1915), is set in the period immediately before the war started. – Hannay is called in to investigate rumours of an uprising in the Muslim world, and undertakes a perilous journey through enemy territory to meet up