LIFE goes upstairs, downstairs, and into every fascinating historical nook and cranny of America's favorite British TV mansion and Highclere Castle, the storied 17th century stately home where the series is filmed. Magnificent photography and gripping stories make this a must-have read for the show's millions of fans. Find out more about: The illegitimate daughter of a Rothschild whose marriage to the Fifth Earl of Carnarvon kept Highclere in the family; Highclere's connection to the discovery of Tutankhamun's tomb, the sudden death of an Earl, and the first rumors of a famous curse; World War I, as it was depicted in Downton Abbey, and as it really unfolded on the home front.