On the planet Alzarius in the alternate universe of E-Space, the Doctor, Romana and K9 find survivors of a crashed starliner, strange creatures lurking in the marshes and a genetic riddle which stretches back centuries.
2010
2000
1979
1998
1972
2009
2015
1970
2008
2022
2016
1999
2023
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2017
1966
2012
1991