(4 episodes)
The Doctor is called in by UNIT to investigate when a number of scientists go missing from a top security institute. Following the kidnappings back in time to the Middle Ages, he is unaware that investigative journalist Sarah Jane Smith has stowed aboard the TARDIS. As events unfold, the Doctor discovers a sinister alien, intent on altering the future of mankind...
Written by Robert Holmes
(6 episodes)
Returning to London, the Doctor and Sarah find a city almost completely devoid of life. The civilian population has been evacuated in the wake of an unimaginable event: somehow Dinosaurs have returned to terrorise the Earth.
Written by Malcolm Hulke
(4 episodes)
A power failure in the TARDIS draws it off course, and the Doctor and Sarah Jane Smith end up stranded on the bleak planet of Exxilon. They soon meet members of an Earth expedition in a similar situation. The humans are searching for a rare mineral, but first they must find out what is draining their power and avoid what's inside another grounded spaceship, the Doctor's oldest enemies, the Daleks...
Written by Terry Nation
(6 episodes)
When the TARDIS lands 50 years after its first visit to Peladon, the Doctor and Sarah Jane discover a troubled planet ruled by the late king's daughter. Peladon is at the center of a war and the Galactic Federation desperately needs a mineral found in the mines. But why is the ghost of Aggedor killing miners, and why can't everyone be trusted? Queen Thalira needs the Doctor's help to find out.
Written by Brian Hayles
(6 episodes)
At a Tibetan retreat in the English countryside, a group of men are using ancient meditation rituals to tap into a mysterious alien power. They unwittingly create a bridgehead between Earth and Metebelis 3, a planet where the "Two Legs" are oppressed by giant spiders. The creatures are desperate to recover the blue jewel that the Doctor gave to Jo Grant as a wedding gift. Now the Doctor must risk everything and return to Metebelis 3 to face the awesome power of The Great One, who plans to use the crystal to enslave all of human kind.
Written by Robert Sloman