Returning to Earth in the 21st century, the Doctor, Jamie and Zoe immediately find themselves caught in the midst of a crisis. T-Mat – a form of instantaneous transportation essential to the smooth running of life on Earth – is going disastrously wrong.Publisher’s summary, 1986 edition
The Doctor discovers that the T-Mat Base on the Moon has been taken over by a group of Ice Warriors, led by the villainous Slaar. Their home a desolate and dying planet, the Martian invaders see Earth as a world ripe for conquest.
But before they can colonise Earth they must dramatically after its atmosphere. And so they unleash the Seeds of Death…
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