Sir Francis Walsingham?s official title was principal secretary to Queen Elizabeth I, but in fact this pious, tight-lipped Puritan was England?s first spymaster. A ruthless, fiercely loyal civil servant, Walsingham worked brilliantly behind the scenes to foil Elizabeth?s rival Mary Queen of Scots and outwit Catholic Spain and France, which had arrayed their forces behind her.Though he cut an incongruous figure in Elizabeth?s worldly court, Walsingham...