It's another episode of Mark Gatiss here on Doctor Who: The Writers' Room. This month, Erik and Kyle look at the two stories Gatiss wrote for Series 7B. First up, "Cold War," the story that reintroduced the Ice Warriors aboard a Russian submarine in 1983. Second, "The Crimson Horror," a penny dreadful riff with the Paternoster Gang and a delicious Diana Rigg performance. Are these maybe Gatiss' best scripts?