At 6 am on 21 April 1940 John the 9th Duke of Rutland, and one of Britain's wealthiest men, ended his days, virtually alone, lying on a makeshift bed in a dank cramped suite of rooms in the servants' quarters of his own home, Belvoir Castle, in Leicestershire. For weeks, as his health deteriorated, his family, his servants - even the King's doctor - pleaded with him to come out, but he refused. After his death, his son and heir, Charles, the 10th Duke of Rutland, ordered that the rooms be locked...