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In the thrall of a telepathic power stronger than her own, Cally (Jan Chappell) sabotages the controls of the Liberator, which ends up landing on an uncharted planet. Here Cally meets the wretched bioproducts of genetic experimentation on her own planet. Blake and the others attempt to escape, but the Liberator is ensnared in the titular "Web" -- and making matters worse, the hostile Decimas are preparing to attack. This episode of Blakes 7 was originally broadcast on January 30, 1978.