chunk: The complex structure of the books begins with a Preface signed by Lloyd, which presents the frame concept, that Lloyd has discovered a thirty-year-old manuscript by Llewellyn Drury in a library. Then comes a Prologue in which Drury introduces himself.
  The book's Chapter I begins the story of how Drury met the mysterious "I-Am-The-Man", who reads his own manuscript account of his adventures to Drury over many sessions. The mysterious stranger, also known as The-Man-Who-Did-It, relates events that supposedly occurred thirty years earlier, during the early part of the nineteenth century.