Other stuff: too many investigative roles. Waaaaaay too many. A full cop, a 1-shot cop, a tracker, and House Lannister (Even if House Lannister's empowered power wasn't a full investigative power, the fact is, with that many investigative powers flying around, "paying your debts" would be more likely to investigate someone than anything else)? No way. Simply no way. At least one person is lying, possibly even two. Or scum has a redirector...
Frankly, I believe the most likely person to lie is silverspawn. He was super quick to offer to full-claim when Voltaire proposed the idea, and was first to claim when Voltaire kinda forced the massclaim. It could be eager town... or it could be scum that absolutely wants to claim an investigative role before Ashersky, because he knows that he is going to be suspected (he even says so himself). Don't know one way or another, but considering that Voltaire's and Ashersky's claim support each other, if only one person is lying, he is the most likely.
Going down the conspiracy theory lane (this is not going to make me popular)...
-Ash could be a scum PR that targeted Robz, because Robz. Then Voltaire tracked him, because Ash.
-Or Ash could be a full cop that targeted Robz, because Robz. Then Voltaire was basically cornered into claiming Tracker that copped Ash because of simultaneous claims. I say cornered, because he couldn't possibly foresee the way the massclaim was going to end, and really there was nothing else he could have done as scum once he found himself there (Ash had crumbed that he had copped Robz, so it isn't terribly unlikely).
-Or both could be scum giving each other massive towncred.
I have trouble with the conspiracy theories, because:
-Voltaire has played a very towny game.
-Ashersky would need to have flawlessly faked a PR game since N0, both in the thread and in the QT. Seriously, reread him.
-If both are scum, it superlinks them, and why aren't they dying during the night?