Just let me know. No feelings hurt if it can't be done.
Like I said, I'm fine with both concepts, though the countess is someone that I have to invent if you don't play her. Perhaps as an NPC that is employing the twins, who are of Brand's brood, unbeknowst to her.
It's up to you how deeply you'd care to keep the twins undercover. Just feel free to move it into the OOC and work from there.
(Edit: Sorry about the incoherence, I just got home from an overtime shift.)
Seems interesting. I'll be honest though, I've never really played DND or anything of the sort. Seems like the knowledge isn't needed that much. But I'm interested.