I have been looking for awhile on the message boards for rules for demon and or devil possession. I have an npc that needs an exorcism, he was used as a red herring in the story line. My good little pcs most undoubtedly will fix him, I hope to go all Linda Blare next session.
Also any suggestions and or advice always welcome.
This is a low magic world, not every town has a cleric or temple. Most clerics can only cast low level spells. The pc cleric is level 7.
check the council of thieves AP, "The Infernal Syndrome" it has those rules.