The Doctor and Sarah are held responsible for the deaths on Zeta Minor.
The Doctor and Sarah visit the planet Zeta Minor on the edge of the universe.
Broton the Zygon warlord intends to use the Skarasen to attack London.
The Doctor and Sarah find their way into the Zygon spaceship at the bottom of Loch Ness.
Sarah is attacked by a Zygon disguised as Harry.
Something is destroying oil rigs off the coast of Scotland. UNIT investigates!
The Cybermen intend to crash the bomb-laden Nerva Beacon into Voga.
Nerva Beacon is invaded by the Cybermen who are intent on destroying Voga.
Sarah is a victim of the plague and the only cure is to transmat her down to Voga.
The Doctor, Sarah and Harry return to Nerva and find a deadly mystery.
The Kaled elite move to prevent the development of the Daleks but is it already too late?
Davros interrogates the Doctor, forcing him to reveal the future of the Daleks.
The Kaled dome is destroyed by the Thals’ rocket but Daleks appear and a massacre begins.
The Doctor informs the Kaleds of Davros’s experiments, but Davros takes drastic action.
In the Thal dome, Sarah is forced to load a war rocket with radioactive explosives.
The Time Lords send the Doctor to Skaro shortly before the creation of the Daleks.
Sarah has been caught by Styre, the Sontaran conducting experiments on the captive humans.
Arriving on Earth, the Doctor, Harry and Sarah meet a group of stranded human colonists.
Noah has now fully transformed into a Wirrn and intends to devour the sleeping humans.
The Doctor tries to access the memories of the dead Wirrn Queen.
The Ark has been invaded by the giant insectoid Wirrn.
The travelers land on the Ark and find mankind’s survivors… in hibernation!
The Doctor races to avert a nuclear holocaust and the robot takes Sarah hostage.
Sealed inside an underground bunker, Miss Winters issues her demands to the world.
Harry Sullivan is sent to infiltrate Think Tank to discover the truth.
UNIT are called in when top secret plans are stolen from high security establishments.
The Doctor returns to Metebelis 3 where he must face the spiders’ ruler, the Great One.
Sarah makes a bargain with the Queen Spider and returns to Earth with the Doctor.
The Doctor is in a coma and Sarah is held prisoner in the spiders’ larder.
Following Lupton, Sarah is accidentally transported to Metebelis 3 where she is captured.