As Elizabeth welcomes Britain's first woman prime minister and Charles meets a young Diana Spencer, an IRA attack brings tragedy to the royal family.

Margaret Thatcher visits Balmoral but has trouble fitting in with the royal family, while Charles finds himself torn between his heart and family duty.

While Margaret Thatcher struggles with the disappearance of her favorite child, Elizabeth reexamines her relationships with her four children.

As Thatcher's policies create rising unemployment, a desperate man breaks into the palace, where he finds Elizabeth's bedroom and awakens her for a talk.

On a tour of Australia, Diana struggles to balance motherhood with her royal duties while both she and Charles cope with their marriage difficulties.

Grappling with mental health issues, Margaret seeks help and discovers an appalling secret about estranged relatives of the royal family.

As many nations condemn apartheid in South Africa, tension mounts between Thatcher and Elizabeth over their clashing opinions on applying sanctions.

Charles is caught in a deadly avalanche, prompting both him and Diana to reevaluate their commitment to their troubled marriage.

Between a fire at Windsor Castle and tensions in her children’s marriages, the Queen commemorates and reassesses her 40 years on the throne.

Faced with the fallout of an intercepted call with Camilla and the consequent kickback to his marriage, Prince Charles must navigate a scandal.

As BBC's Martin Bashir goes to great lengths to secure an interview with Diana, the lonely princess finds purpose and warmth in a London hospital.

The Queen spends quality time with Prince William. On Guy Fawkes Night, fireworks make for a perfect distraction from Diana's BBC interview.