The whole kantor/mario scenario revolves around the possible fact that wonk was killed by a vigilante. I thought about it and here is an alternate theory :
Smeags death :
During day 1, I observed that smeags was giving out hints about his character. Both pezus and kantor realized who smeags was, but prof (who knows GoT theme well) faked knowing nothing about it. I didn't buy it at that time, but I also thought maybe prof was trying to keep smeags identity safe? So I didn't pursue him.
And the next day prof flips scum and smeags flips town. I think it's safe to say that prof (or his team) killed smeags.
Wonk's death :
During day 1, wonk appeared shady, he didn't post much, and was like someone else said, like his mafia self. This definitely created a lot of suspicion on him, but at the end of day 1, the highest amount of suspicion was on Final-Fan, and also on Spurgeonryan because they hammered baalz thereby allowing no time for discussion. I don't think the vigilante killed wonk. The scum faction 2 knows that wonk is not in their team, and might have killed him as a result.
Prof's death :
Kantor says he protected prof because he thought prof was town. He has given an explanation for the protection (whereas mario just tells me to go back and read it). Assuming he is the insane doctor (which is big assumption) the townie who killed someone would have to be kantor.
I admit I thought about this scenario after all the discussion about insane doctor started up. If Wonk wasn't killed by the vigilante, then he has to be killed by scum. Smeags was definitely killed by prof's team. That means prof was killed by a townie, and kantor is the only one who has stepped forward.
Of course this theory assumes that both mario and kantor are what they are saying.
If the vigilante is one-shot, and has killed wonk, then he should step forward and say it to disprove this theory. Of course, if you are a jack of all trades then don't. Basically do not out yourself if you still have a night action left.