Episode 1 | Episode #12.1

It's April 1968 and change is coming to Nonnatus House. Racial tensions cast a shadow over Poplar, and the sisters welcome a new recruit.

Episode 2 | Episode #12.2

At a coffee morning for expectant mothers, Sister Julienne meets heavily pregnant Lilian Reynolds, who is expecting her first child.

Episode 3 | Episode #12.3

Sister Veronica is shaken when a mother reveals a terrible truth about her marriage. Shelagh cares for a baby with a life-threatening condition, and Nancy harbours a secret.

Episode 4 | Episode #12.4

The maternity home is thrown into chaos by an outbreak of gastroenteritis, and Nurse Crane fights to save her career. Meanwhile, Cyril encourages Reggie to seek help.

Episode 5 | Episode #12.5

A pregnant mother with a chronic heart condition falls unwell. Nancy grows suspicious of a young father's erratic behaviour, and Matthew prepares for a visit from his father.

Episode 6 | Episode #12.6

Trixie supports an underage mother through a difficult time, Monica Joan welcomes an unusual guest to Nonnatus House, and Sister Veronica spearheads a new council initiative.

Episode 7 | Episode #12.7

Nancy makes a home visit to Imelda O'Connor, and is surprised that Imelda, her husband Maurice and young son Paul are living in a cramped caravan on a building site.

Episode 8 | Episode #12.8

Dr Turner experiences the biggest test of his career, while Trixie's approaching nuptials cause stress levels to escalate. Sister Julienne hatches a plan to save Nonnatus House.