Tardis
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Tardis
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audio stub

The Catalyst was the fourth and final story of the second series in The Companion Chronicles audio range. It was produced by Big Finish Productions. It was written by Nigel Fairs and featured Leela.

Publisher's summary[]

The pride of the Z'nai matches that of Leela of the Sevateem. Why would the Doctor imprison one in such an unlikely place, and what terrors will be brought about by letting it loose?

Plot[]

to be added

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