The Sultan's Spymaster tells the story of Peera Dewjee, an Ismaili merchant who crossed from India to Zanzibar as a boy. Later he became Sultan Barghash's barber and valet, where he became a confidant to the Sultan and a trusted advisor. Peera Dewjee acted behind the scenes during momentous events in the history of Zanzibar and East Africa - the closing of the slave markets and imperial expansion by Germany and Great Britain. The Sultan's Spymaster...