Technically the (or the bridge between 8 and 9), this special is a blend of holiday cheer and sci-fi horror.
The title is most commonly associated with a specific episode of Doctor Who , but it is also the name of a This Is Us episode. Depending on which show you are looking for, Doctor Who: "Last Christmas " (2014 Special) [S3E9] Last Christmas
The episode serves as a reconciliation between the Twelfth Doctor and Clara, cementing their bond before they head into the high-stakes adventures of Series 9. This Is Us: "Last Christmas " (S1E10) Technically the (or the bridge between 8 and
The Doctor and Clara are trapped at an Arctic base under attack by "Dream Crabs"—alien parasites that induce a dream state while devouring their victims' brains. This Is Us: "Last Christmas " (S1E10) The
It famously guest-stars Nick Frost as a surprisingly capable and "real" Santa Claus who helps the Doctor save the day.
To survive, the characters must navigate multiple layers of dreams, often questioning what is real—a concept critics compared to the film Inception .