The Crawley family heads north, to Duneagle Castle in Scotland, to visit Lady Rose and her warring parents. Bates, Anna, Molesley, and O'Brien also make the trip. Gregson, the man who hired Lady Edith on at the newspaper, tells her that he is going to be in Scotland as well; which leads to some family dispute as to Gregson's motives. At Downton, the remaining staff looks forward to the approaching country fair, and Carson struggles to keep them concentrating on work. A new housemaid, Edna, joins the staff; only to be quickly fired by Mrs Hughes. Mrs. Patmore has a new romantic interest, but she soon wonders if the interest is in her or her cooking. Lady Mary goes into labor early, and travels home to deliver her baby - a son. Matthew rushes to join her and meet his heir; and tragedy strikes the Crawley family yet again.
Premiered in UK as Season 3 - Christmas Special 2012: "A Journey to the Highlands"