[ He doesn't move, though his eyes follow, the edges of his lips twitching up, watching as Sherlock slowly circles around him. He looks more entertained now that Sherlock's less stationary, almost like a cat watching a toy, his jaw working at the mint, it's peppermint, you can probably smell it now can't you piece of chewing gum in his mouth. ]

You're so forthcoming with all of your observations about other people, you're not going to do so with me? [ A pout, well, nearly a pout, his lips are pressed into a frown, and he finally turns to watch him, moving on the ball of his foot. ] I want to know what you know.

[ He smiles then, and pauses. ] More than that, I want to know if you're right. How do you know? How do you know if I'm not just putting things on for your benefit?

[ Jim Moriarty then starts pacing along with him, circling him instead, like a wild animal prepared to strike at any given moment. ] Tell me, what you think you know from me.