The strange city of Carrion Hill has long loomed over the surrounding swamps in eastern Ustalav, yet its rulers have shifted many times through the centuries. Often enough that only a few sinister scholars and curious minds know the true nature of the hill’s original inhabitants—vile and depraved cultists of the Old Gods. Yet this morning, a dreadful recrudescence rises from the depths of buried nightmare in the vaults below Carrion Hill. A monster stalks the twisted alleys of the city, spreading panic before it and leaving destruction in its wake. Can the Carrion Hill Horror be stopped?