A picture of Sam Heughan as Jamie and Caitriona Balfe as Claire from the first season of Starz TV series "Outlander." Facebook/ Outlander

Filming for “Outlander” season 4 has wrapped up this year, and the cast and crew are enjoying their Christmas break. However, the writers of the show will continue to work, making sure the scripts are ready for filming next year.

Working on the Starz TV series is a year-round process for some people. Co-executive producer Matthew B. Roberts revealed that he and the other writers will have to continue writing during the Christmas break so they can get ahead of production. The producer said that a holiday hiatus is the only chance they get to catch up on their work.

Filming of the popular time-travelling TV series has so far been on schedule, with the cast and crew delivering the product regularly like clockwork. Four episodes of the next season have already been filmed, and it seems like the writers are currently busy finishing the script for the rest of the 13 episodes.

Scotland is still the base for the production, with filming set to continue in the country next year. The plot has moved on to America, but the cast will not be travelling to the US. Instead, locations in Scotland, and perhaps another country, will stand in for the New World. Details about the filming locations are yet to be announced.

While the writers are busy working for the show, executive producer Ronald D. Moore and co-executive producer Maril Davis will be busy on a new space drama series ordered by Apple. Both Moore and Davis confirmed in separate tweets that they will not be leaving “Outlander” TV series, which is currently filming season 4 with talks of season 5 as well.