|Story Code: 6Y / Season 22||UK Airdate: 9 Mar to 16 Mar 1985|
|Doctor: Colin Baker||Previous Story / Next Story|
This story aired in the following known countries. They are listed in chronological order according to known airdate. If no month is noted, the actual airdate is not confirmed, and is a close approximate. (Refer also to Selling Doctor Who for expanded airdates.)
|United States||from Sep 85||NTSC|
|United Arab Emirates||Jul 88||PAL|
|New Zealand||Oct 89||PAL|
- This story was made as a double-length two-parter. It was edited into four episodes for overseas sales. New opening captions were created, using a slightly "squared" font instead of the usual "rounded" font for the title and writer credits. The story title was written CAPITALS. New captions with "Part One / Two / Three / Four" were also added.
- This story was dubbed into German.
US TV Guide descriptions
- Episode 1: The Doctor is forced to land on the planet of Karfel, where the evil Borad plots to replace the inhabitants with a mutated life form.
- Episode 2:
- Episode 3:
- Episode 4: