A potential rabies outbreak causes panic in Poplar. Trixie cares for a patient in difficult labor.

Sister Catherine cares for her first solo patient. The midwives attend a women’s lib meeting.

Senior members of the convent embark on a mercy mission, swapping the snowy East End of London for Hong Kong and getting a chance to take flight and work out what really matters. For her part, Sister Julienne suddenly finds herself excited about the Order’s future. After years of battling change, she decides to embrace it and see what love can do.

Nancy’s wedding plans take a surprising turn. Sister Catherine takes her First Vows.

Joyce faces a disciplinary hearing over a recent complaint which has been upheld.

It's September 1970 and the local dustbin strike leads to a refuse site established outside Nonnatus House. With Rosalind unwell, Joyce takes over her rounds, including a visit to a rude patient who resents being examined by her.

The Nonnatus team oversee the care of a man living inside an iron lung.

The sisters welcome a new postulant, Sister Catherine, to Nonnatus House.

Rosalind delivers a baby with a suspicious spinal lesion. A sudden gas explosion shocks all.

Trixie cares for a single mother recently discharged from a psychiatric hospital.