Mark Twain begins his story with these words... " It was in Warwick Castle where I came across a curious stranger. He attracted me with his candid simplicity, his marvellous familiarity with ancient armour, and the restfulness of his company." He had written a journal, and left me with a sheaf of papers, which was old, old parchment. I very carefully began to turn the pages, which is where the story begins...