In some Pathfinder campaign there is a house, where there are a lot of haunted things. The description of such a haunt says something like this:
CE obsessed haunt (around the bed) Caster Level 3rd
Notice Perception DC 20 (to hear the sound of XXX) hp 6; trigger proximity ; reset 1 day
Effect: The haunted character suddenly feels [ something bad...]
the haunted PC must make a DC 14 Will save to avoid taking 1d4 points of Wisdom damage.
My question is now, how do I as a GM work with such haunts?
Say, one character goes near the bed. I'll let the player do a perception roll, and if they succeed, they hear the XXX sound.
Now what? Can the player run outside and nothing happens to him? What does the "Caster Level 3rd" mean here? What are the HP of the haunt good for?
My personal approach would be: 1st: perception roll, 2nd: on success let the player hear the XXX sound. 3rd no matter what the perception roll was, the haunt hits the player and [something bad] happens, including the mandatory will save. I don't use any HPs or any Caster Levels of the haunt, because I have no idea what to do with them.
I doubt that this what the original description means, but I think it nevertheless makes sense. What are your thoughts on this? And most important to me: what are the really intended steps of events?