WASHINGTON — The final and sixth season of the hit British drama “Downton Abbey” premieres Sunday night on PBS.

In a promo clip of the season, Hugh Bonneville, who plays Robert Crawley in the series, tells Downton Abbey’s butler Mr. Carson, “If I could stop history in its tracks, maybe I would. But I can’t, Carson, for neither you nor I can hold back time.”

Watch the promo:

PBS will air a marathon of the season a week before the finale and a behind-the-scenes special detailing how the show was made.

The series finale is set for the first week of March, the network announced in October.

ABC Radio, Associated Press contributed to this report.