The episode will last for a slightly extended 50 minutes, and finishes at 9.10pm. The Girl Who Died, co-written by Jamie Mathieson and Steven Moffat, will air on the same day on BBC America at 9/8C.
Captured by Vikings, the Doctor and Clara must help protect their village from Space Warriors from the future: the Mire. Outnumbered and outgunned, their fate seems inevitable. So why is the Doctor preoccupied with a single Viking girl?[Source: BBC]