The people of Golarion are no strangers to the howl in the dark, the thing that goes bump in the night, or the icy touch of dread upon the back of the neck. Pathfinder Campaign Setting: Horror Realms explores those regions of the world where humanity ought not to tread, lore best left unlearned, and creatures whose names are synonymous with fear. Yet it is against such horrors that heroes are needed the most! This volume is a perfect companion for Pathfinder RPG Horror Adventures, and is intended for use with the Pathfinder Roleplaying Game and Pathfinder campaign setting, but can easily be used in any fantasy setting.