Back up to: Season 18
4/4 The Doctor finally uncovers the tragic truth of the Starliner.
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3/4 The Doctor discovers that the Deciders have been perpetuating a lie to their own people.
2/4 The Doctor and K-9 are stranded when the TARDIS is stolen by the Marshmen.
1/4 The TARDIS enters the universe of E-Space and lands on the planet Alzarius.