The Skymines of Karthos was the tenth Bernice Summerfield audio story produced by Big Finish Productions. This was the first audio story to mention Bernice's pregnancy — she fell pregnant in the novel The Squire's Crystal but did not become aware of it until the novel The Infernal Nexus. This was writer David Bailey's second Bernice audio story; he wrote the first story of this audio season, The Secret of Cassandra.
When Bernice receives a message from her old friend Caitlin, saying that she's found evidence of a ruined civilisation on the mining colony of Karthos, the good professor is naturally intrigued. After all, the planet is meant to be barren, with no life other than the colonists.
Arriving on Karthos, Bernice finds that Caitlin is missing, and the colony is under attack from vicious creatures that seem to have come from nowhere. Bernice has no choice but to set out for the heart of the ruins to discover just why Karthos seems to have sprung to life once more...
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- Bernice Summerfield - Lisa Bowerman
- Irving Braxiatel - Miles Richardson
- Caitlin Peters - Rebecca Jackson
- Michael Peters - Jimmy Wilson
- Professor Konstantin - Johnson Willis
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- This audio drama was recorded on 8 April 2000.
- From this adventure onwards the original theme tune returns.
- Benny is visibly pregnant. She conceived in PROSE: The Squire's Crystal, discovered that she was pregnant at the end of PROSE: The Infernal Nexus, and will give birth in PROSE: The Glass Prison. The liner notes state that she is about five months along at the time of The Skymines of Karthos.