Strax, the Sontaran butler to Victorian investigator Vastra and her wife Jenny, will be swapping the Paternoster Gang for a short spell with Jago and Litefoot in a new audio special from Big Finish Productions: Jago & Litefoot & Strax!

In this special double-disc release, the Sontaran suffers a disorienting attack, mistakes the two Victorian investigators for Jenny and Vastra and moves into Litefoot’s home. Together, they are on the trail of a creature that is stealing brains, which may or may not be linked to a haunted house in London.

The characters of Jago and Litefoot, played by Christopher Benjamin and Trevor Baxter, were created by Robert Holmes and first appeared opposite Tom Baker’s Fourth Doctor in The Talons of Weng-Chiang in 1977.

“It’s a testament to the great Robert Holmes and these two wonderful actors that Jago and Litefoot remain so eternally popular,” says producer David Richardson, “and it’s such a joy to have them set foot in the world of current TV Doctor Who as they join forces with Strax for a special investigation.

“Justin Richards’ script is superb, packed with excitement and wit, and it’s so fun to see the mis-matched duo of Jago and Litefoot become a mis-matched trio!”

Dan Starkey, who first played Strax on TV opposite Matt Smith in A Good Man Goes to War, says: ‘The Talons of Weng-Chiang was one of my favourite Doctor Who stories growing up, first in its form as a Target novelisation and then in the prized VHS I got for Christmas 1988. Spool forward nearly 30 years, and I've been lucky enough to encounter Jago and Litefoot in their audio incarnation already, with my turn as Mr. Tibbs in Series Nine.

‘Now it's a joy to bring Strax face to face with the characters who in many ways defined how Doctor Who "does" Victorian London. I hope the sonic thaumaturgy of those clever coves at Big Finish will excite the ears and invigorate the imagination, as Henry Gordon Jago might have put it!’

Jago & Litefoot & Strax will be released as a two-disc special in November 2015.

Jago & Litefoot: Series 10 will be available from October. The previous nine series of adventures are also available to buy, with Series 1 now permanently reduced to just £20 on CD and download.