A change from classic. The Cop has been replaced with a Mason, and the Mafia has been made a Killer and a Cultist.
If the Cult Leader dies N1, and the doc hasn't been culted or masoned, and no Masons are in the graveyard, he should claim. Then the Masons should claim. This will make it auto, as that leaves 2 possible people left to be the Killer, and you can easily lynch them both.