Waterbury and the Naugatuck Valley have a rich and varied history, but some of its darker chapters have remained hidden. These include an abandoned road guarded by an invisible entity, factory ghosts, a monstrous serpent, unnerving cemetery lore, demonic houses and a haunted restaurant. Once declared dead due to decades of being inundated with industrial and chemical pollutants, the Naugatuck River has been brought back to life by environmental stewardship, which has been a welcome benefit to residents. However, the river's cleanup has also awakened supernatural stories that carve a paranormal path from the stream's source in northwest Connecticut to its confluence with the Housatonic. Local author and historian Michael Bielawa reveals the eerie dark side of the river and this fabled valley.