06/19/2012 01:39 pm ET

Elizabeth McGovern Talks 'Downton Abbey' Season 3

From its ratings success to its six Emmy Awards, "Downton Abbey" has become a phenomenon. And from the sounds of Season 3, "Downton" obsession won't be fading anytime soon.

"You know something's going on when you become an adjective. I remember the first time reading something described as 'very Downton Abbey,''" Elizabeth McGovern, who plays Lady Cora, told the LA Times of the show. "It's all a big mystery to me."

According to creator Julian Fellowes, the upcoming season will center on the lives of the characters as they adjust to the "extraordinary social change" brought on by the Great War.

"Oh, I promise you there will be fireworks," McGovern revealed of Season 3, set to air in the US in early 2013. "Beyond that I say nothing."

While McGovern has high hopes about Season 3, which will include appearances by the Shirley MacLaine, she wasn't quite as enthusiastic about elements of the second season of "Downton."

"What's made the show successful and different is that attention to character detail and that's what the audience likes ... Writers [in the second season] had to do a lot of glossing over the domestic life, and some of the small moments between characters that characterized the first season," McGovern told the LA Times in April.

The actress later clarified to TV Guide Magazine that she was "in no way criticizing the second season or implying that she loved or enjoyed it any less."

For more details on Season 3 of "Downton Abbey," click over to the LA Times