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Good morning, everyone! (and never mind that it's almost daytime). I woke up, read your messages, and reread the newspaper.
First, I agree that Revan was definitely isolated, but Yashur could have been either blocked or isolated (so either the girl sent a greeting, or the doctor visited Dave and gave him another ND). And if Yashur was blocked, then either it was Eddie, or it was the Mafia.
Nebka could only have had a trainer as a supporting role with moral support. This means that either the trainer trusts Nebka, or the girl was redirecting the trainer. But the latter clearly shouldn't be given any hints about this.
For now, we have two options: a neutral non-voting player, who is as useful as a goat for milk, and the execution of someone from the list of suspects, namely Gumer. I chose the latter because, firstly, I think Gumer is a suspicious inactive player (and in fact, many Mafia players sometimes deliberately sit back because they don't like the role/hope it will work/it's too difficult), and secondly, we need information now, and there is little of it at the moment.