Forbidden Isle of the Nightstalkers (PF1)

From publisher blurb: The backwater village of Thornhill is a dismal, dreary place. Its folk—superstitious, backward peasants—have little to do with the outside world. Sometimes, though, the outside world intrudes on Thornhill and its folk. A century ago, a vampire came to Thornhill. Crusading adventurers destroyed the beast, but not without great cost. Before its destruction, the night-stalker infected several villagers with its terrible curse. The survivors could not bring themselves to slay their fellows. Instead, they imprisoned the vampire’s spawn in a hidden tomb to await a cure that never came. Now, a mad priest’s blasphemous pursuit of the greater good lures the characters to a hidden prison-tomb dug into a lonely island amid the ebon waters of a cursed lake. An adventure by Creighton Broadhurst for 3rd-level characters.