Collider has released some new information and stills from the upcoming Doctor Who Christmas Special, The Snowmen!

Doctor Who: The Snowmen marks Jenna-Louise Coleman’s second appearance in the series – she also had a role in the season premiere “Asylum of the Daleks” as Oswin, who died at the end of that the episode.  That raises a lot of questions that may or may not be addressed in the Christmas Special as to whether or not her companion character Clara is Oswin, or another person entirely, or whether she’s traveling in an opposite direction in time as the Doctor (which has already been done with River Song).

Both Smith and Coleman have hinted that it’s more likely that Clara is just a new character, but even though the two had chemistry in her brief turn early in the season, it will be interesting to see how that plays out now, especially with the Doctor in deep mourning.

Check out these new stills from The Snowmen: