Holmesian detective, Silurian and leader of The Paternoster Gang, Madame Vastra helped The Doctor solve many a case.
The Great Intelligence employs those chaps from Buffy and a Back-To-The-Future letter to lure The Doctor to Trenzalore
Doc investigates trouble at mill and gets marinated by a prehistoric leech in a Yorkshire red light district
Mary Poppins moonlights as Eliza Doolittle and The Great Intelligence feeds countless labourers to his carnivorous snowmen
Just A Quick Pre-Christmas-Special-Christmas-Prequels-May-Christmas Chat