Netflix’s The Crown is back, and it’s the stuff “of which fairytales are made.” Until the “happily ever after” part is over, of course. The royal drama returns for its highly anticipated fourth season, which introduces two titans in British history: the divisive first female Prime Minister Margaret Thatcher, played by a steely Gillian Anderson, and the beloved Princess Diana, played by newcomer Emma Corrin. Watch The Crown season 4 trailer below.