New mother Roseanne's past continues to haunt her, wreaking havoc on her family life.
A hospital secondment and a difficult birth raise moral questions for Sister Julienne.
Suspicion threatens to break apart a closely knit family after a typhoid outbreak.
Barbara is put to the test when a dockworker's wife is forced into a difficult decision.
The nuns and midwives are shaken by the birth of a baby with severe deformities.