Journey to the Centre of the TARDIS

"Journey to the Centre of the TARDIS" is the tenth episode of the seventh series of the British science fiction television series Doctor Who. It was first broadcast on 27 April 2013 on BBC One and was written by Stephen Thompson and directed by Mat King. In the episode, the alien time traveller the Doctor (Matt Smith) forces a salvage crew (played by Ashley Walters, Mark Oliver, and Jahvel Hall) to rescue the Doctor's companion Clara Oswald (Jenna-Louise Coleman). Clara is lost in the depths of the sentient spaceship and time machine the TARDIS after its engines become damaged by the salvage crew's beam. The story was based on showrunner Steven Moffat's frustrations with the 1978 story The Invasion of Time which intended to explore the interior of the TARDIS but due to budgetary issues, had to be reduced in scale. The episode was filmed almost entirely at Roath Lock studios. The episode was watched by 6.5 million viewers and received mixed to positive reviews. Plot