Mark Gatiss's Lucifer Box

Mark Gatiss may be better known for his work on TV, which ranges from (co-)writing and (often) starring in The League of Gentlemen, Doctor Who and Sherlock, presenting (the recent A History of Horror series about horror movies) and, as a novelist, writing a number of Doctor Who licensed books for the BBC. But my favourites amongst the dozen or so books he's been involved with are the trio that