Ah, good, some
I'm thinking the game will be set at a masquerade party, and rather than lynching, players vote for who to unmask. The trick is that two or three of the guests aren't just dressed as monsters or ghosts -- they are
monsters and ghosts! Anyone selected as a villain can be the scary Halloween-type being of their choice.
Once unmasked, the monsters are exorcised, banished, or otherwise fade away; any unmasked innocents will still be at the party, just no longer eligible to vote or share any inside information they might have. Sound good?