Downton Abbey
Edith (Laura Carmichael) will continue to hide a secret in the Season 6 finale of "Downton Abbey." Carnival Film & Television Limited 2015 for Masterpiece/Nick Briggs

“Downton Abbey” fans will want to gather around the TV to say goodbye to the Crawley family and their servants this holiday season. ITV and Carnival Films, the producers of the U.K. series, have announced details about the final episode of the beloved show.

The final episode is also the Season 6 Christmas special. While it will air in the U.K. on Christmas day, it will air on PBS in the U.S. in 2016. According to the synopsis, Mary (Michelle Dockery) will to try to bond with her sister Edith (Laura Carmichael). However, the episode description teases that Edith’s “secret continues to pose a threat.” Meanwhile, Henry (Matthew Goode) will continue to struggle at Downton as he “settles into the role of husband and stepfather.” Carson will be in a similar situation as he faces “personal challenges.” All of this will be set ahead on New Year’s Eve ahead of 1926.

Fans of the long running series, which first premiered in 2010, will also be welcoming back a couple of familiar characters. Lily James and Matt Barber will be reprising their roles as Lady Rose and Atticus Aldridge, while Peter Egan will be returning as Lady Rose’s father, Shrimpie. Viewers will also meet a new face in the Christmas special. Patricia Hodge of “Miranda” will be portraying Bertie Pelham’s (Harry Hadden-Paton) mother.

As previously reported, executive producer Gareth Neame announced in March that Season 6 would be the last for “Downton Abbey.”

“Inevitably there comes a time when all shows should end and ‘Downton’ is no exception,” Neame said in a statement. “We wanted to close the doors of ‘Downton Abbey’ when it felt right and natural for the storylines to come together and when the show was still being enjoyed so much by its fans.”

“Downton Abbey” Season 6 will premiere in the U.S. on PBS on Sunday, Jan. 3, 2016. The final episode will reportedly air at the end of February.