Go Inside 'Downton Abbey' Season Four!

While Lady Mary, Branson, The Dowager Countess and the whole of Downton Abbey's staff will remain front and center in the upcoming fourth season, the new year will also introduce a host of new faces, and ETonline has a sneak peek at the actors joining the show and, as Michelle Dockery perfectly puts it, "They're all really handsome."

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Tom Cullen plays Lord Gillingham, a childhood friend of the Crawley clan who catches Mary's eye. "He's someone whose heart rules his head," producer Liz Trubridge says. Another potential suitor for Mary is Charles Blake, played by Julian Ovenden.

Another twosome arrives downstairs as Nigel Harman plays Green, a new valet, and Raquel Cassidy plays Lady Cora's new maid, Baxter, who shares a past with Thomas and looks to function as the show's new O'Brien.

Lastly, a pair of performers join the show with Gary Carr playing a singer by the name of Jack Ross and Dame Kiri Te Kanawa bringing Dame Nellie Melba to life. Check out the cast and crew talking about these new additions!

Check out a few other season four previews videos!

Downton Abbey premieres January 5 at 9 p.m. on Masterpiece on PBS.