Queen of the World: Part Two

Shortly after her Coronation, Queen Elizabeth II faced one of the biggest challenges of her reign.

Her only sister, Princess Margaret, had fallen in love with her father's former equerry Peter Townsend -- a divorced father of two, who was twice her age.

In Part Two of Queen of the World, we examine the trials and tribulations the young sovereign faced, and the personal ramifications that comes with putting duty above everything else.

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