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The Fifth Citadel was the second story in the second series of Counter-Measures, produced by Big Finish Productions. It was written by James Goss and featured Simon Williams as Ian Gilmore, Pamela Salem as Rachel Jensen, Karen Gledhill as Allison Williams, Hugh Ross as Toby Kinsella and Philip Pope as Templeton.

Publisher's summary[]

People are falling ill near Holborn and displaying a sickness with all the hallmarks of radiation poisoning. While Gilmore and Allison look into a graveyard, Sir Toby and Rachel venture underground to meet an old friend with a desperate scheme.


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  • Mrs Pritchard died in 1878.
  • Gilmore and Rachel had dinner together the previous night but she claims that it was "perfectly professional."
  • Gilmore was once posted in Calcutta, India.
  • Gilmore describes Allison as being "as icy as a holiday in Barbados".
  • The citadel was sealed off six months ago.
  • Sir Toby refers to a doctor as a credit to "Mr Bevan", referencing National Health Service founder Aneurin Bevan.


  • This is the first Counter-Measures audio drama not to feature any science fiction elements.
  • The four citadels - bunkers created in World War II in case of German invasion, which were expanded during the Cold War in case of nuclear attack - existed in real life. In the Behind the Scenes feature, James Goss said he created a fifth so he could set a story there without anybody "writing in to Big Finish saying 'ahhh, it can't be that one'."
  • This story was recorded on 22, 23, 25 and 26 October 2012.


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