The current series of Doctor Who continues tonight at 8:25pm on BBC One and BBC One HD, read on for the synopsis to the ninth episode:
FLATLINE - by Jamie Mathieson
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.
The episode will be available to watch on BBC iPlayer soon after broadcast, Doctor Who Extra will also be available to watch on BBC Red Button and online. The series continues next week with In the Forest of the Night - more information coming then.