In January, Prince Harry's much-anticipated memoir, Spare, hit bookstores around the world, selling more than 3.2 million print copies in its first week (including more than 64,000 in Australia). Gracing the cover was the Duke of Sussex's instantly recognisable ginger-haired visage and his famous byline. What was missing was the name of the person who penned much of Spare: J.R. Moehringer, a Pulitzer Prize-winning journalist turned ghostwriter. As far as ghostwriters go, Moehringer is one of the world's most famous, having written Nike founder Phil Knight's 2016 autobiography, Shoe Dog, and tennis champion Andre Agassi's acclaimed 2009 memoir, Open. As...