Back up to: Season 26
4/4 Morgaine takes control of UNIT's nuclear warhead and prepares to start a countdown.
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3/4 Morgaine threatens to unleash the Destroyer unless the Doctor gives her what she wants.
2/4 The Doctor and Ace explore King Arthur's spaceship deep under Lake Vortigern.
1/4 In Carbury, knights in armour arrive waging a war that began thousands of years ago.