Broadcast: Sunday 19th October 2014
12:00am-1:00am EDT (04:00 GMT) < > « »
BBC America

Featuring: Peter Capaldi, Samuel Anderson, Jenna Coleman, Christopher Fairbank, Joivan Wade

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.
Synopsis Source: BBC America website schedule listing