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Okay. My theory, based on doubt:
Syorol, a guy from the warrior guild, visited Tox. You can see the soldier's description in the first newspaper; he's just a regular soldier in the fortress, while the northerners are tough warriors. Arandor, the soldier, either went or was transferred (or both) to the corpse.
On the third night, Aretz died, and Sezam was infected with a vampire. Or, okay, Sezam licked a rat, and a vampire just bit someone else.
I'm basing this on the descriptions and alternative role assignments. Yashur, Revan, and Ment are mafia. Revan deceived me, Aretz, and others. Tox pretends to be a scout, while Revan is just a random guy.
It's unclear why Tox insists that Aretz is Syorol, and that a soldier visited him. He needs to answer this, otherwise I'll vote against him.
Prove me wrong.