And… action! Shooting the train scene, 11 June, 2014.

BBC has released the ninth Doctor Who Extra, behind-the-scenes video and photos, for episode 9, “Flatline.”

All change as Clara ‘becomes’ the Doctor! Find out what Peter Capaldi and Jenna Coleman thought about that! Plus Steven Moffat and Jamie Mathieson reveal the origins of Flatline…

The TARDIS in the tunnel set, constructed in the BBC’s Roath Lock studios.

Jenna Coleman (on the screen) during Flatline’s train scene.

Director Douglas Mackinnon on location in Barry.

Joivan Wade, who plays Rigsy, prepares for a take.

On location in Barry, in the Vale of Glamorgan, Wales.

Episode Summary:

Separated from the Doctor, Clara discovers a new menace from another dimension.

But how do you hide when even the walls are no protection? With people to save and the Doctor trapped, Clara comes up against an enemy that exists beyond human perception.

“Flatline” Stars: Peter Capaldi (The Doctor), Jenna Coleman (Clara), Samuel Anderson (Danny Pink), John Cummins (Roscoe), Jessica Hayles (PC Forrest), Joivan Wade (Rigsy), Christopher Fairbank (Fenton), Matt Bardock (Al), Raj Bajaj (George), James Quinn (Bill).

Directed by Douglas Mackinnon. Written by Jamie Mathieson.

‘Doctor Who’ airs on BBC One at 7:30pm and on BBC America on Saturdays at 9pm.