From publisher blurb:
Skinfin Murders is a Pathfinder Roleplaying Game compatible adventure for 4-6 5-7th level PCs.
People are disappearing on the sleepy island of Ebot’s Hollow. When a surgically altered body washes ashore, the townsfolk seek aid. The band of adventurers investigates a nest of horrors in the island’s cavernous bowels. The Skinfin cult feverishly works to warp the inhabitants of the island into twisted aquatic forms for surviving the prophesied sinking of the island beneath the waves. Within the caverns, the adventurers face treacherous footing, eerily intelligent sea-creatures, impassioned cultists, and the palpable madness permeating the very stone around them.
Skinfin Murders is a horror-mystery for 5-7th-level characters.
It can be inserted into any campaign that takes place near the coast or can serve as a one-shot adventure for a night of horror-filled fun.