Part 4 of "The Visitation".
Part 3 of "The Visitation".
Part 2 of "The Visitation".
Through some fluke, the Doctor and Tegan arrive in the 17th century, where they discover three Terileptil prison escapees who are trying to destroy life on the planet with an enhanced version of the great plague.
A massive Cyberman invasion force is determined to strike Earth. The Doctor works to defeat them... but victory may come at a terrible cost.
Accused of murder, the Doctor must persuade the crew of an Earth freighter to change course -- before the slumbering menace in their hold awakes.
Deadly androids. A massive bomb. Who is behind the attacks in the caves? The Doctor follows the clues to a freighter in deep space, where an old enemy awaits...
Earth, 2526. A palaentological expedition has been horrifically slaughtered by an unseen force and a squad of soldiers is investigating... just as the TARDIS lands in the area.
The Ancient Haemovore stands upon the Earth once again, determined to change the future by erasing the past and Ace finally feels love for her mother.
The Doctor and Romana decide take a much-needed holiday on the pleasure planet of Argolis. Ravaged decades before by an interstellar war between the Argloin and the Foamasi, Argolis now hosts the Leisure Hive - an ideal retreat for tourist from all over the cosmos. But a series of suspicious accidents leads the Doctor and Romana to discover that the Hive holds dark secrets.
The Viking runes in the crypt contain a secret to Ace's past, while the Ultima machine offers to break the chains of the Wolves of Fenric.
Scaroth is determined to go back 400 million years in time to prevent a mistake. But the Doctor must stop him - because the consequences would be disastrous.
As Morgus continues to plot his political future on Androzani Major, Sharez Jek insanely believes Peri will fall in love with him.
Captured by the Count, the Doctor and Romana uncover an elaborate plan to steal the Mona Lisa. But there is more to Scarlioni's plans than a simple theft.
Gunrunners are on Androzani Minor, supplying the rebellious android-builder Sharez Jek with munitions to help his attempts to return to power.
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