Jago & Litefoot & Strax: The Haunting (SP15)

Strax, the Sontaran butler to Victorian investigator Vastra and her wife Jenny, suffers a disorienting attack and mistakes Jago & Litefoot 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...