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From Pathfinder Adventure Path: Bastion of Blasphemies, which isn't enabled.

Lerrisu

CREATURE 9
UNIQUEMEDIUMGHOSTINCORPOREALSPIRITUNDEADUNHOLY

Female ghost

Perception +17; darkvision
Languages Common
Skills Intimidation +19, Stealth +19
Str -5, Dex +6, Con +0, Int +3, Wis +2, Cha +4
Site Bound

These three ghosts can only leave the crypts when Bastardhall appears on Golarion, and even then, they can't leave the island.

AC 27; Fort +15, Ref +21, Will +17
HP 113; Immunities bleed, death effects, disease, paralyzed, poison, precision, unconscious; Resistances all damage 10 (except force, ghost touch, spirit, or vitality; double resistance vs. non-magical)
Rejuvenation (divine)

The three adventurers re-form after 2d4 days here in the crypts unless someone carries their respective urn of ashes down to the temple in Maiserene (area A9) to be cleansed by Shirail.

Speed fly 25 feet
Melee Ghostly Weapon +21 (agile, finesse, magical), Damage 2d10+9 void
Lerrisu's Dirge (auditory, divine, emotion, mental)

Lerrisu begins to sing a mournful dirge that unsettles the living but bolsters her ghostly allies. Each living creature within 30 feet must attempt a DC 28 Will save with the following results, while each of her ghostly companions within 30 feet become Quickened until the start of Lerrisu's next turn; they can use the extra action only to Fly or Strike.

Critical Success The target is unaffected.

Success The target is Off-Guard by sadness invoked by the dirge until the start of Lerrisu's next turn.

Failure As success, but also Slowed 1 by sadness.

Critical Failure As failure, but Slowed 2.

Malevolent Possession (incapacitation, mental, possession)

The ghost attempts to possess an adjacent corporeal creature. This has the same effect as the Possession spell (DC 23 Will), except since the ghost doesn't have a physical body, it is unaffected by that restriction of the spell.

Pathfinder Adventure Path: Bastion of BlasphemiesORC