Rat Trap

Rat Trap
Rat Trap

Regular Cast

Peter Davison (The Doctor), Janet Fielding (Tegan Jovanka), Mark Strickson (Turlough), Sarah Sutton (Nyssa), John Banks (Clifford Andrews), Alison Thea-Skot (Sally Lucas), Terry Molloy (Dr Wallace), David Seymour (Kevin), Andrew Dickens (Matthew/Major Harris), Charlie Norfolk (Caitlin Jones)


1983: as the country goes to the polls, two ‘Urban Explorers’, together with a freelance journalist, break into the long-defunct Cadogan Tunnels, once a secret wartime facility… and later, so rumour has it, the site of an experimental laboratory with a nasty sideline in vivisection.

What they find, in its twisting underground corridors, is something the most cynical conspiracy theorist could never have imagined: a highly-evolved society of questing, intelligent creatures, living right under humanity’s nose for decades.

But there’s no way out of the tunnels – as The Doctor, Nyssa, Tegan and Turlough are about to discover when the TARDIS brings them, too, into the complex. It’s a rat trap – and they’ve all been caught!

Written by: Tony Lee
Directed by: Ken Bentley


coming soon



  • Rat Trap was the one hundred and forty-eighth monthly Doctor Who audio story produced by Big Finish Productions. Released in June 2011, it was the final story in a series of three stories
  • British Prime Minister Margaret Thatcher is mentioned several times. The Doctor notes that the 1983 general election will be a”landslide” for the Conservative Party.
  • Turlough refers to the State of Grace in the TARDIS and how it will prevent weapons fire but not general damage.
  • The rats mention the Mara to Tegan. (Kinda, Snakedance, The Cradle of the Snake)
  • One of the rats mentions Nyssa’s experiments on the Cractids. (Cobwebs)
  • The rats exploit Nyssa’s anger at The Master for killing her father, Tremas, and her step-mother Kassia. (The Keeper of Traken)
  • The Helheim cure is destablising. (Cobwebs)
  • Turlough uses a spark wire from Purity. (The Whispering Forest)

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