Pam Ferris

Returning from her stint at The London Hospital, Jenny needs all her skill as a midwife when she and Sister Evangelina assist at the birth of the Roberts' baby, who is born with spina bifida. The parents, Doug and Ruby, struggle to understand and accept their son's life-limiting condition.

As Jenny Lee settles into her role, there is a new arrival at Nonnatus House, Chummy (Miranda Hart). A welcome pair of extra hands Chummy sets about showing her worth, but an overwhelming keenness to please and her inability to ride a bike prove obstacles

The whole Poplar community pulls together to prepare for the annual Summer Fete. This year with the introduction of a Baby Show, the Nonnatus House midwives will be more involved than ever; especially Trixie who assumes responsibility for securing a celebrity judge.

Trixie and Sister Mary Cynthia team up to support a deaf mother-to-be, while a case of morning sickness proves more serious than initially suspected. Elsewhere, Fred's daughter is less than delighted about his forthcoming wedding.

A young diabetic girl faces heartbreak when she falls pregnant as a result of a clandestine romance. Elsewhere, the midwives become involved with a settlement of Irish Travellers and Sister Mary Cynthia delivers her first baby since becoming a nun.

As Poplar is gripped by a mysterious outbreak of dysentery, first-time mother Marie Amos's life is turned upside down when her husband Tony is arrested for gross indecency with another man. Meanwhile, Nurse Crane meets Dolores McEvoy, a pregnant Irish woman with two young children who, on examination, is found to be covered in flea bites and clearly malnourished.

A chance encounter with an impoverished child forces Trixie to see an unfamiliar darker side of life. As Nonnatus House welcomes a new resident, Nurse Barbara Gilbert, Tom Hereward has a surprise romantic gesture in store for Trixie.