The Boneless are tricked into recharging the TARDIS.

The Doctor lands the TARDIS… but something isn’t quite right.

Clara tries to think of a way to supply the TARDIS with enough energy to recharge.

The Boneless follow Clara, Rigsy, Fenton and Al into the train tunnels.

George realizes he might be the next target.

Inside the TARDIS the Doctor works on a de-flattening device – the 2Dis.

PC Forrest investigates the local disappearances.

The Doctor, trapped inside the TARDIS.

Rigsy takes a look inside the tiny TARDIS.

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.