The Seeds of Doom

When scientists in the Antarctic uncover a mysterious seed pod, the Doctor is called in to investigate. He soon realises it is extra-terrestrial and extremely dangerous. At the same time, however, ruthless millionaire plant-lover Harrison Chase has learned of the find and must have it for himself. Meanwhile, the pod has plans of its own…

The Brain of Morbius

The Doctor and Sarah arrive on the mysterious planet of Karn, where there is a token mad scientist, a mysterious cult and a renegade (but bodyless) Time Lord.

The Android Invasion

The Doctor and Sarah finally arrive back on Earth, but find a village completely deserted and android duplicates of their friends.