Hard Bay (5E)

From publisher blurb:

Hard Bay’s fate has ever been tied to the sea. Although blessed with a natural, protected harbour and plentiful fishing, foul weather and a dangerous, unwholesome reputation have conspired to keep the village nothing more than a dreary, isolated place. A vein of smuggling and thievery ran deep through the village until the Sharkrazor pirates were crushed four decades ago. Now administered by three minor noble families, a darker horror than mere piracy lurks within the place. Rumours speak of strange fires set amid a circle of ancient, weathered stones atop a nearby shunned hill when the moon is new and of strange, abhorrent fishmen lurking in the abandoned, half-drowned smuggler tunnels beneath the ramshackle village.