** Warning: Spoilers Ahead! **

Winter is settling in across the country, and all we're craving is a nice warm fire to sit by. That, and another season of British drama "Downton Abbey," which is starting up on Sunday, January 5 at 9 p.m. EST on PBS.

After the shocking Season 3 finale, many "Downton" fans were reeling at the death of major character Matthew. How will Lady Crawley survive? What will happen with Edith? What of the children?

Lots of these questions and more will be answered in Season 4 -- and there will also be additional questions added to the list, we're sure. As is expected, the Downton estate is in mourning this season, trying to come to terms with yet another death.

"Downton Abbey" has become a major hit for PBS, and is currently its top-rated show. Season 4 has finished airing in the United Kingdom, so now it's North America's turn. And yes, in case you're worried, "Downton" has already been renewed for a fifth season.

"Downton Abbey" Season 4 premieres on PBS on Sunday, January 5 at 9 p.m. EST.

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  • Lady Mary and Brason

    "Downton Abbey" Season 4

  • Daisy

    "Downton Abbey" Season 4

  • Mr. Carson

    "Downton Abbey" Season 4

  • Lady Rose

    "Downton Abbey" Season 4

  • Lady Mary

    "Downton Abbey" Season 4

  • Branson and Sybil

    "Downton Abbey" Season 4

  • Season 4 cast: Tom Cullen

    Cullen will play Lord Gillingham, a family friend of the Crawleys who visits the family as a guest at a house party. He's <a href="http://www.huffingtonpost.com/2013/03/02/downton-abbey-lady-mary-boyfriend_n_2796504.html?utm_hp_ref=tv" target="_hplink">one of Lady Mary's potential suitors</a>, along with ...

  • Season 4 cast: Julian Ovenden

    Ovenden will play aristocrat Charles Blake, <a href="http://www.huffingtonpost.com/2013/03/02/downton-abbey-lady-mary-boyfriend_n_2796504.html?utm_hp_ref=tv" target="_hplink">another potential love interest for Lady Mary</a>.

  • Season 4 cast: Dame Harriet Walter

    Walter will play Lady Shackleton, an old friend of the Dowager Countess.

  • Season 4 cast: Joanna David

    David will appear in a guest role as the Duchess of Yeovil.

  • Season 4 cast: Nigel Harman

    Harman will play Green, a valet.

  • Season 4 cast: Dame Kiri Te Kanawa

    Te Kanawa will play a guest who sings in the house.

  • Season 4 cast: Shirley MacLaine

    Shirley MacLaine will also return for the Season 4 finale.

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