PBS's "Masterpiece" says "Return to Downton Abbey" will air Dec. 1 with what is billed as "a tantalizing taste" of the upcoming season, which begins Jan. 5.
It also will look back at the series' past three seasons.
Susan Sarandon will host the special, a mix of behind-the-scenes footage, clips of favorite moments and interviews with cast members.
Michelle Dockery, Hugh Bonneville, Elizabeth McGovern, Jim Carter and Shirley MacLaine are among the stars who will appear in the special.
"Downton Abbey," the wildly popular drama about British class and culture a century ago, will move into the Roaring Twenties in the new season.
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