So we have a first faction of undead, cognizant enough to pass as not, and extremely ferocious. Ferocious enough that we have been told it would be better to take our own lives should we risk capture by them. And by all accounts, ancient beings of some kind.

And then another faction, made up of this man and the corpses of townspeople that he somehow called back to the living. And this faction outnumbers the other, but they are merely puppets.

... You did not seem surprised, back in the jail, to see undead people moving about.