- The Crown returns to Netflix on 15 November for season 4.
- The streaming service released a trailer featuring Gillian Anderson as Margaret Thatcher and Emma Corrin as Princess Diana.
- This season the royal family will become increasingly divided.
"Something as important as the monarchy simply cannot be allowed to fail," the voice of Elizabeth Coleman as Queen Elizabeth says in the teaser for The Crown season four.
The royal family will return to Netflix on Sunday, 15 November.
The teaser trailer released by the streaming service on Thursday features newcomers Gillian Anderson as Margaret Thatcher and Emma Corrin as Princess Diana.
WATCH IT HERE:
"As the 1970s are drawing to a close, Queen Elizabeth (Olivia Colman) and her family find themselves preoccupied with safeguarding the line of succession by securing an appropriate bride for Prince Charles (Josh O'Connor), who is still unmarried at 30," reads the official synopsis.
"As the nation begins to feel the impact of divisive policies introduced by Britain's first female Prime Minister Margaret Thatcher (Anderson), tensions arise between her and the Queen which only grow worse as Thatcher leads the country into the Falklands War, generating conflict within the Commonwealth.
"Prince Charles' romance with a young Lady Diana Spencer (Corrin) provides a much-needed fairytale to unite the British people, behind closed doors, the royal family is becoming increasingly divided."
The Crown nabbed 13 Emmy nominations for season three with Olivia tipped to win the award for her role as the queen.
In July Netflix renewed the show for a sixth and final season.