It's Christmas 1969, and the funfair and carol concert add color to frosty Poplar. Yet, the festive spirit at Nonnatus House is dampened by the spread of influenza alongside growing fears of an escaped prisoner after a spate of break-ins.

It's Christmas 1969, and the funfair and carol concert add color to frosty Poplar. Yet, the festive spirit at Nonnatus House is dampened by the spread of influenza alongside growing fears of an escaped prisoner after a spate of break-ins.