The Poison Seas

The Poison Seas

The Poison Seas

Regular Cast

Lisa Bowerman (Bernice Summerfield),  Miles Richardson (Irving Braxiatel), Ifan Huw Dafydd (Principal Lurnix), Nicky Goldie (Clinician Nedda), Jenny Livesay (Joanne Carver), Matt Dineen (Ressix)


Professor Bernice Summerfield’s life has never been what you could call simple. But, just as she really feels like things at the Braxiatel Collectionmight be settling down to some sort of normality, she is sent away from the comforts of home on a mission for the Earth Reptile Council.

Bernice has visited the planet Chosan before, so she seems the ideal candidate to intervene when a Sea Devil colony there comes under threat from a terrorist cell. Under cover of visiting an old friend, Bernice sets out to learn who is working in league with the terrorists to ensure the eradicatedition of the colony.

But as she delves deeper under the oceans of Chosan, she discovers that something else ­ something much more ancient and powerful ­ wants rid of the Sea Devils. Soon, every living thing on the planet is in peril. And all because there’s no place like home…

Written by: David Bailey

Directed by: Edward Salt


  • The Poison Seas was the third audio story of the fourth season of the Big Finish Bernice Summerfield series.
  • The term”Earth Reptiles” used for both Silurians and Sea Devils was established (in-universe) as a”politically correct” term in several of the Virgin New Adventures novels.
  • This audio drama was recorded on 28 June 2003.
  • The Sea Devils were introduced in The Sea Devils.
  • Bernice was last on Chosan approximately four years earlier in The Secret of Cassandra..


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