...Either a truly immortal human, or a Vampire like yourself.

[Sadly, Moriarty is smart enough to pick up what Sherlock is trying to say - and he doesn't mind.

He was just unlucky, like most of his life.]

I suppose if I had been able to speak, your sire would have seen me. Before I broke...well. I did see his back and he left with you slung over his shoulder.