The Hand of Fear

When the TARDIS lands in a quarry on Earth, the Doctor and Sarah are caught in a mining explosion. Sarah is found clutching what appears to be a fossilised hand, buried in one-hundred-and-fifty year-old strata. Analysis shows the hand to be silicon-based and inert, but when Sarah begins to act as if possessed, the Doctor suspects that it may still be alive…

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The Masque of Mandragora

An encounter with the living energy structure known as the Mandragora Helix leads the TARDIS to 15th Century Italy. Between palace intrigue, the machinations of a sinister cult and a rogue fragment of Helix energy, the Fourth Doctor and Sarah have their hands full. There is not much time, for when Mandragora swallows the Moon, it will be time to strike.

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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…

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