As the author of more than eighty books and short story collections— including And Then There Were None, The Mysterious Affair at Styles, and Murder at the Vicarage— Agatha Christie is the most popular novelist in history, with more than two billion books of her work sold worldwide. Nearly as famous for her aversion to the press as she was for creating Hercule Poirot and Miss Marple, Christie made no secret of her need for privacy. She lived a life shrouded in secrecy, and nearly fifty years after her passing, fans are still curious about her life beyond the pages. Drawing upon more than 5,000 previously unpublished letters, notes, and documents, award-winning biographer Richard Hack allows Christie to write again. Duchess of Death is her story, as full of romance, travel, wealth, and scandal as any mystery Christie ever crafted.