I really don't think Impertinence is it. Based on what we know so far, my theory is 1 scum faction, 5 or 6 strong, and 1 independent (the perp). So scum could now be down to 4 or 3 already. So there are 8 or 9 of us in town right now.
I am town, whiteeagle seems clean. Carl i think has been cleared. Trucks, Impertinence, and TheProf have worked in a bloc so far and largely been responsible for busting Protoss. Padib i'm willing to trust for the moment because he's giving a consistent read and his flavor helps explain the no-kill from last night. Although he could be the nuke and lying to protect himself.
So your scum suspects are most likely EricFabian, Conegamer, Wright, and Wonktonodi in that order. Nuke suspects are Radish and Spurge, maybe padib as an outside chance.
Again, I'd start with grilling those two. We need to knock out the perpetrator to keep the game length going.
Monster Hunter: pissing me off since 2010.