Without seeming to quite realize he's doing it, Sherlock starts working on the knots in the tie. Most of his attention is on Obadiah.

"Perfect," he says, eyes closed, rather in the attitude of a cat being scratched.

"Ah—by the way, if I were still looking—for evidence of your intentions towards Tony, which I—" he breaks off entirely with a gasp, continues, "—am not particularly, I would be extremely reassured by all this."