Rebecca is stunned by a sudden loss. The team rallies to show their support, but Ted finds himself grappling with a piece of his past.

Alfred, Thomas and Martha become entangled in an assassination plot against Lord Harwood.

After a member of the British royalty is abducted, Alfred must take a side in the struggle. Meanwhile, Lord Harwood uses those closest to Alfred to remove him from the…

Sister Julienne cares for an expectant mother who has cerebral palsy. Nonnatus House kicks off its new midwifery training scheme with the arrival of four new pupil midwives.

James Delaney returns to 1814 London after 10 years in Africa to claim a mysterious legacy left to him by his father.

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.