The new season of Downton Abbey takes place at the start of the Roaring Twenties but begins with the sort of stock market debacle that would seem better suited to an ominous October nine years on. After learning that the man of the house had just jeopardized the entire estate with a can’t-miss railway deal gone awry its women were aghast. "Why were you so heavily invested in one enterprise? Isn't that foolish?" asked Lady Cora of her husband the Sixth Earl of Grantham. "I cannot understand why so much money was put into one company " seconded the ...