For almost two weeks Australia has felt the full force of a royal charm offensive. The visit by the newly minted Duke and Duchess of Sussex, Prince Harry and Meghan Markle, has been a triumph for the Royal couple and the House of Windsor brand. It's a world away from the scandalous 1990s when the Royal family was embroiled in a rolling series of crises, indiscretions and PR disasters leaving them out of fashion and out of step with the times. Some were even talking about the end of the monarchy itself. On Monday Four Corners charts how the Royals have rebuilt their reputation and changed the way they manage "The Firm".