If Jules had been better-written, his plan would actually be pretty clever. He knows he can't let Patch recognize him and he knows that Patch is always stalking and hanging on Nora, so he gets someone else to interact with her while Patch is around. Thing is, Fitzpatrick didn't give him any presence in the novel at all, beyond "I'm so bored". He just drops out of nowhere at the end!

Dabria was so flipping pointless. Even worse, she NEVER shows up again, leastwise not in Crescendo. I haven't read all of Silence yet and Fitzpatrick has a fourth book planned so...she might be in there? No idea. Other than that, she's vanished.

I honestly don't know. The chapter describes him as "dusky", but that's still not very descriptive.