Doctor Who: The Best of The Third Doctor Season 1 Episode 10 The Green Death, Episode 2

The Doctor and Jo continue their investigation of the strange goings-on at the Global Chemicals factory in Llanfairfach. They discover that the factory is producing a deadly chemical waste that is being dumped into the local mine, causing the death of the green fungus on which the local community relies for their livelihood. The Doctor is convinced that the waste is the work of the giant maggot creatures he has encountered, which have been bred by the factory's director, Stevens, and his colleague, Clifford Jones. The Doctor confronts Stevens and Jones, but they refuse to listen to his warnings and insist that their research is vital to saving the world from a global famine. Meanwhile, the maggot creatures continue to wreak havoc, attacking and killing several people in the surrounding area. The Doctor is also faced with a personal dilemma when he discovers that Jo's boyfriend, Professor Jones, is working with Stevens and Jones on their project. He is torn between his loyalty to Jo and his mission to save the world from the deadly effects of the chemical waste. As the situation becomes increasingly dire, the Doctor and Jo must race against time to stop the maggot creatures and prevent the destruction of the mine and the surrounding community. They must also convince Stevens and Jones to abandon their dangerous research before it is too late. In the end, the Doctor is compelled to make a difficult decision that will have far-reaching consequences for him and his companions.