Has being on the front line transformed nasty Thomas for the better? Partners in crime Ron James-Collier and Siobhan Finneran, who play Thomas and O'Brien, explore how the war trivialises petty issues of old.
The cast share their idea of their character's perfect Christmas and give a sneak peek at the 2012 Downton Abbey Christmas special.
How will the residents of Downton Abbey celebrate the festive season this year?
Can Violet, Cora and Isobel finally bury the hatchet?
Will Mrs Patmore take a step back and let someone else do the cooking for once?
And, with Mr Bates' trial looming, will Anna ever find peace and happiness?
With all this, dancing lessons and a computer generated Christmas pudding, they'll be in need of a rest before Christmas has even begun!