Since the hit UK series Downton Abbey wrapped up in 2015, devoted fans have been dying to know what’s been keeping the Crawley family busy. Now, they are just weeks away from finding out with the film adaptation’s release.

And to rile up the fans, its executive has revealed who in the cast took a little more convincing than the others in joining the film. See the film’s high definition trailer below:

To promote the film’s September 20 debut, some members of the drama’s team were featured in a sit-down interview for this weekend’s issue of the magazine, Parade. In the interview, they discussed how rounding up the ensemble cast once again proved to be a challenging feat.

Hugh Bonneville (Robert Crawley, Earl of Grantham) celebrated that everyone from the original cast joined in on the film adaptation. Although he did admit, “We had some hurdles getting everyone in the same place at the same time, but there was a will to do it.”

The drama’s executive producer Gareth Neame named Dame Maggie Smith (Violet Crawley, the Dowager Countess of Grantham) as the last to join in. “I suspect in a lot of ways, Maggie missed working with the other actors,” Neame said about Smith rejoining the Emmy-winning series’ original cast. The producer says that Smith had to make sure that the whole ensemble was going to turn up for the film before getting on board.

The UK period drama’s film version will put the Crawley family on the big screen as they prepare to host a visit from a very special guest, the Royal family.