Doctor Who: 10 Big Questions After The Witch's Familiar
5. Are We Building Up To Day Of The Doctor?
At some point in the Twelfth Doctor's future he will join forces with his previous incarnations to help save Gallifrey on the last day of the Time War, locking it away in a pocket universe until it is safe for his people to return to the galaxy. This will likely happen when he finds Gallifrey again - something which might not happen for some time yet.
In Day Of The Doctor, all we saw were those eyes, those eyebrows and in The Witch's Familiar we saw that same shot again. Furthermore, that shot also appeared in the trailer for next week's episode Under The Lake. Is this a subtle clue that we are getting closer to his involvement in Day Of The Doctor than we think?
It certainly is something to ponder in the coming weeks...