Jim smiled thinly at the talk of the heroes. Oh he underestimated no one. Not one of them. But they weren't him. They weren't Sherlock Holmes and as such they just weren't quite up there. No matter what the Master might have noticed about them. Heroes were for villains that needed that kind of validation but Sherlock was no hero. He was just...different. On the side of the angels. Perhaps now literally so. "I've heard some of the names of your 'heroes' and I find even the ones with power have a weakness. A friend, a less powerful friend, a lover. Something. Go for the heart and they tend to fall apart good and messy."
Probably not the nicest of things to do in a shiny new city but James Moriarty had never made any claims on being nice. Romana seemed to be the Master's heart. Or close to it as Moriarty figured he got. Broke him out of a prison during a war, he was sure it had all been very sexy and impressive and had left a mark. And she had a soft spot for the Master. Good thing to know if he ever needed to use it. In a way he hoped he wouldn't. The Master could just leave him to do his thing and he in turn wouldn't interfere with whatever the Time Lord was planning, for now.
And being complimented was always nice! "Oh those books. They paint me ridiculously don't they. I've had a look at some, including one I probably shouldn't. Waterfalls and all that. Me and Sherlock have a bit of a fated date with destiny, and I love a challenge, you know, and he does that, he challenges, I think he actually must like it. Only explanation. He must get a kick out of it." He didn't quite know what to make of the Master's nemeisis just yet. The Doctor. Doctor Who. And three of him. Well, if nothing else maybe they could be kept occupied.
"I bet the seal thing had an inkling, what do you think? Can't have you without your Doctor, and it seems you can't have me without having him...and his little dog too. Obviously."