The programme will once more follow Strictly Come Dancing and will be followed by Casualty. On the other main UK channels the episode is scheduled against ITV's The X Factor (which airs from 8:00pm to 9:20pm), a repeat of Dad's Army, on BBC2, Grand Designs on Channel 4, and World War II in Colour on Channel Five.
Flatline Press NoteSeparated 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.