It's the big freeze of 1963, and the midwives strive to provide the best care for their patients whilst battling against blizzards and burst pipes.

It is January 1965 and along with the rest of the UK, the Nonnatus House team are stunned by the death of Winston Churchill.

Sister Julienne cares for a pregnant prostitute, while Dr Turner puzzles over a mysterious string of symptoms.

Lucille is trapped in a lift with a woman in labour while working at St Cuthbert's, and Nurse Crane helps a Sylheti woman with fistula.

Four new doctors arrive at Nonnatus House and ruffle some feathers. Fred and Reggie try to help an old man and his pigeons, while Dr Turner tries to solve the old man's cough.

Sister Frances struggles to persuade the wife of a cancer patient to accept help, and as the nation obsesses over The Sound of Music, Sister Julienne considers the privileges of being…

May's adoption by the Turners comes under threat when someone from her past appears. Valerie's cousin's baby has a devastating illness, and Kevin returns to work with Dr Turner.

Trixie helps a blind mother, Marion, care for her new baby, but trouble starts when Marion's sister calls Social Services to intervene.

The local council threatens to cut funding to Nonnatus House, which may face demolition. Two pregnant women discover they have something surprising in common.

It is January 1965 and along with the rest of the UK, the Nonnatus House team are stunned by the death of Winston Churchill.

Sister Julienne cares for a pregnant prostitute, while Dr Turner puzzles over a mysterious string of symptoms.

Lucille is trapped in a lift with a woman in labour while working at St Cuthbert's, and Nurse Crane helps a Sylheti woman with fistula.

Four new doctors arrive at Nonnatus House and ruffle some feathers. Fred and Reggie try to help an old man and his pigeons, while Dr Turner tries to solve the old man's cough.

Sister Frances struggles to persuade the wife of a cancer patient to accept help, and as the nation obsesses over The Sound of Music, Sister Julienne considers the privileges of being…

May's adoption by the Turners comes under threat when someone from her past appears. Valerie's cousin's baby has a devastating illness, and Kevin returns to work with Dr Turner.

Trixie helps a blind mother, Marion, care for her new baby, but trouble starts when Marion's sister calls Social Services to intervene.

The local council threatens to cut funding to Nonnatus House, which may face demolition. Two pregnant women discover they have something surprising in common.

The winter continues, and the team at Nonnatus House welcome their newest midwife, Lucille Anderson. Nurse Crane and Dr Turner care for an elderly cancer patient facing eviction.

Lucille faces racism and prejudice when a new mother falls ill. Sister Winifred is keen to have fathers be more involved in the care of their babies.

Sister Monica Joan holds the key to the diagnosis of a mystery illness.

A pregnant mother hears a devastating diagnosis. Elsewhere, Fred and Violet organise a beauty contest, while Trixie and Christopher's relationship feels the strain.

Sister Julienne is drawn into the heart of a different culture when she is called upon to help a Pakistani family. Elsewhere, Trixie struggles to cope after her break-up with Christopher…

Sister Monica Joan holds the key to the diagnosis of a mystery illness.

Sister Monica Joan holds the key to the diagnosis of a mystery illness.

A newly promoted Jenny finds herself facing her most challenging case to date.

A newly promoted Jenny finds herself facing her most challenging case to date.

Sister Julienne works at Holloway Prison, and Shelagh receives a devastating diagnosis.

Sister Julienne works at Holloway Prison, and Shelagh receives a devastating diagnosis.