December 2nd excerpt:

Dean stuck his lip out in what almost looked like a pout, rebellious at the way Sherlock made sense as he talked about Dean interacting with a new human.

“If I do this,” Dean said, refusing to give in completely, “if, you better make sure he doesn’t get any ideas about grabbing me. This size might have its perks when you need to get into small spaces, but it comes with a whole mountain of disadvantages I’d rather be without. If you agree that you’ll keep him under control… I’ll do it. If only because I doubt we’ll be sneakin’ me into any more crime scenes after today otherwise.”

Of all things, being left out of Sherlock’s detective work sounded like the worse of the options.