This isn't Earth The Doctor realises that he isn't on Earth, and that Sarah has been replaced with an android. Classic scene from 1975 mini series The Android Invasion, starring Tom Baker and Elisabeth Sladen.
Special Feature Milton Johns and the crew ponder how believable the 'eyepatch' storyline is in 'The Android Invasion'. See this and much more on 'The Android Invasion' DVD.
Special Feature Nicholas Briggs talks to the locals of East Hagbourne, where 'The Android Invasion' was filmed. See this and much more on 'The Android Invasion' DVD.
Special Feature Philip Hinchcliffe talks about the problems with the Kraal costume. See this and much more on 'The Android Invasion' DVD.
Special Feature Philip Hinchcliffe wasn't too happy with one of the cliffhangers in 'The Android Invasion' - here's how he made it much creepier! As seen on 'The Android Invasion' DVD, from BBC Worldwide.
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