Carnival Films confirmed today that Lily James (Cinderella) and Matt Barber (Being Human) are reprising their respective roles of Lady Rose and Atticus Aldridge for the final episode of Downton Abbey, which will air March 6 on PBS. James previously had said she was coming back to the show for its “Christmas episode,” so called because it will air on Christmas Day in the UK. She discussed filming her scenes for the series finale in August at a red-carpet event when BAFTA gave an honorary award to the show.

Also back, as Lady Rose’’s father, Shrimpie, is Peter Egan (Unforgotten). Joining the cast as a guest is Patricia Hodge (Poirot), who plays Bertie Pelham’’s mother. The last ever episode sees the family and servants preparing to welcome 1926, they celebrate an unforgettable New Year’s Eve together at the great house.

Downton Abbey is the most nominated British show in Emmy history with 59 nominations to date, collecting 12 wins including Outstanding Writing for a Miniseries or a Movie, Outstanding Directing for a Miniseries or a Movie and Outstanding Miniseries or a Movie. The period soap also has amassed nearly 30 other major accolades around the world, including three Golden Globes, three Screen Actors Guild Awards of which two were for Best Ensemble Cast in a Drama Series, a Producers Guild of America Award, and three BAFTA awards.

The final season will premiere in the US on Sunday, January 3.