Here is a link to the stories that Moffat and Gatiss want to adapt if this show gets renewed for a fifth season:

http://www.radiotimes.com/news/2013-07-19/sherlock-steven-moffat-and-mark-gatiss-reveal-which-conan-doyle-stories-they-want-to-adapt-next

How do you guys think these will play out / titles of episodes?

Maybe for the Red-Headed League - Dead Headed League, perhaps.