I'm wondering now if the "kill the killer" thing also applies to, say, vehicular manslaughter. Or just plain old fatal collisions, or other accidents, in which someone is "responsible" for the death but didn't intentionally cause it. Would the zombie know magically and come after the other party? And is this some kind of a zombie-magnetism thing, or do they have to have seen the killer first? Possibilities! It would be a really interesting story if someone raised an accident victim and they broke out of the circle, trundled across town, and tore apart the unsuspecting cause of its death. :P Maybe I should write and ask her...