Moffat told Collider: “Mark [Gatiss] will be starting [to write] very soon. He may have started. I’ve got to finish my Doctor Who 圣诞节 special, and then I’ll be straight onto Sherlock after that.”
"There's this assumption about 粉丝 that they're nuts," he tells the new issue of Red magazine. "But they're people that are really passionate, and I like that.
During the 写作 of "His Last Vow", Moffat also wrote a scene about what Sherlock and Irene did after he rescued her from the terrorists in Karachi. However, the scene was never meant to be filmed.