I am underproud of this one.
4×09 Madame Vastra Investigates: In London, in the time of Queen Victoria, there were many tales of a remarkable personage known as The Great Detective. Scotland Yard has sought out the expertise of Madame Vastra of Paternoster Row when rigid corpses, dyed red appear across the city. But a case of this magnitude may prove too much for even the great detective, her beautiful assistant Jenny Flint, and her boy servant, Thomas Thomas. For this case, she must call on her own secret weapon. When his mysterious blue box turns up, unoccupied and dyed red, the Paternoster Gang faces the terrible possibility even the Doctor can’t get them out of this one…