This is the first of eight episodes that will finish off the season.
BBC Confirms Doctor Who returns to BBC One during the Easter weekend on Saturday, 30 March, 2013.
The Doctor is back in a fantastic adventure written by the show’s lead writer and executive producer, Steven Moffat. The episode – the first in a run of 8 – is directed by Colm McCarthy whose previous credits include Hustle, Spooks and Endeavour.