Alex Kingston appears to have teased fans once more about an appearance from River Song.
Speaking in a video with BBC America, she said: “I look forward to sharing more of [River] with you in the future, but… spoilers!”
Rumours have circulated that River will appear once more in Matt Smith’s final episode during the Christmas special, although there is the possibility that her character also carry over to Peter Capaldi’s series? With Moffat still in charge it most certainly is not out of the question.