The return of the period drama about midwives and nurses in London's East End, picking up the story in January 1965. After dealing with a power cut at the maternity home, Fred follows an unusual sound and finds a newborn baby abandoned in a dustbin. Meanwhile, Dr Turner and Nurse Crane must deal with an alarming outbreak of diphtheria, and Sister Julienne receives news of an ambitious redevelopment programme that potentially threatens Nonnatus House. Starring Jenny Agutter and Stephen McGann