Primary school teacher Lizzy Swann is found dead at the bottom of a cliffside coastal walkway, but what appears at first to be a terrible accident, quickly becomes a murder…

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

Sister Julienne decides it is time to take matters in hand when a letter arrives from the council saying that it will cut funding to Nonnatus House and no longer…

Mother Mildred decides it’s time for Sister Frances to attend her first solo birth. Trixie consoles a patient who discovers she has gonorrhea.

Sister Hilda digs deep to give her terminally-ill patient her final wish whilst the Turners must prepare to say goodbye to May. Fred and Reggie are keeping secrets from each…

Mother Mildred returns and helps a docker family tackle end-stage pneumoconiosis. Lucille cares for an unmarried teenage mother who wants to keep her baby.