Last one. the way he goes immediately tense when Mycroft shows up at the end, clearly protective, then the relief when he realizes they’re brothers. And this is after giggling about a crime scene and how John’s just killed a man (well he was a bad cabbie)

willietheplaidjacket:

Yeah, you can see that adrenaline still pumping when he’s see Mycroft. He’s still itching for a bit of a fight and still willing to do more for Sherlock even though he’s already saved his life that night.

I could write dissertations on John Watson. He’s so far from the simple guy he appears. So willing to protect some people no matter what, and yet so willing to let others, to quote Moriarty, burn.