Falls Keep (S&W)

From publisher blurb: An old keep at the head of nearby falls fills the local tavern with rumors of the past lord of the land, Lord Venwexal. The purpose of his towers is the subject of wild speculation, late night tales, and rumors. After the lord was removed from power by a revolt, some twisted sorcery took up residence, or so the tales say. The abandoned towers have certainly fallen to the wildlands, and few, if any, survive venturing anywhere near the falls. What is sure is that the stone buildings are not standing empty, and most can agree that some powerful magic is at the heart of the unusual keep.