Sherlock thinking (or just not knowing) that John was Moriarty--that's exactly what I thought he thought.

That was the spark, right when I first watched it, and when I saw the prompt I knew I had to write it. Just that flash of uncertainty, and Sherlock clearly doesn't get the SOS message, or if he does he doesn't know what to do with it.

My fluff almost always has at least an edge of angst. It is very difficult for me to just let these people be happy...