Here's one:
you pass out during the night at the exact same time because of a gas sent through the valley that is released by Lewis. during the time everyone is passed out he makes golden statues of himself. (forgot where i heard this)
I guess Lewis isn't a good guy, because I found another theory about him! Somebody realised that in one of Lewis' dialogue options is him saying "I've been mayor of this town for twenty years!" which seems fin until you realize that you move in twenty years after grandpa's death. Did Lewis do something to grandpa or did he just wait for his old bud to die before becoming the new mayor. All I know now is that grandpa was probably mayor once and I'm mad because I'm not able to run OR vote.