pf2e.fyi
From Pathfinder #163: Ruins of Gauntlight, which isn't enabled.

Investigate Haunting

FEAT 4
Archetype Ghost Hunter

You are skilled at noticing the telltale signs of ghosts and hauntings. Even when you aren't Investigating in exploration mode, you get a check to Recall Knowledge about incorporeal undead and haunts active in the area. You also gain a +2 circumstance bonus to skill checks to disable haunts.

Pathfinder #163: Ruins of GauntlightOGL