|The Armageddon Factor|
Back Cover Blurb
Some time ago, the White Guardian, one of the ost powerful beings in the Cosmos, had set the Doctor an urgent task - to find and reassemble the six segments of the Key to Time.
The Doctor and Romana had successfully retrieved five of the segments and nw they have reached the planet Atrios in the middle of an atomic war, to serac for the last, most vital piece.
Sinister dangers await them in the final stage of their quest...