The scenes being shot are directed by Douglas Mackinnon (his third episode this year). The writer of the episode is still to be confirmed, but the rumoured title is Flatline.
The story appears to be set in Bristol with Cardiff filling in for the location. Clara, for some reason, is alone and investigating some strange goings on.
And it looks as though the Doctor has even given Clara his Sonic! Very trusting.
This episode will also guest star veteran actor Christopher Fairbank.
Fairbank’s character is on community service in the episode, alongside Joivan Wade (blue cap) and Matt Bardock (brown jacket).
The set features lots of people all strangely facing the walls in a creepy tunnel.
UPDATE: New pics added.
A pic from today’s filming shows that the people on the walls have vanished by the end of the shoot.
Lots of people have been going missing…
Are the following pics clues to what’s really going on?