'The Crown' Season 4 trailer darkly foreshadows the 'fairy tale' of Princess Diana

As the historical drama of The Crown creeped closer to the 1980s, it would eventually and obviously come to cover the tragic story of Princess Diana. This teaser for Season 4 gives viewers their first good look at actor Emma Corrin, who transforms into the People's Princess with the aid of some amazing costumes and wigs, and...