Most people remain oblivious to the truth—there's a monstrous menagerie of supernatural entities that feed upon human victims without our knowledge. Fueling themselves with our psychic energy, high states of emotion, and our essential life-force, these dark entities attack as we sleep or even in our waking hours, terrifying and tormenting unsuspecting souls whenever and wherever they can. Join Nick Redfern as he delves deep into the long history of struggle between us and them. Learn the ways of Shadow People, supernatural seducers, poltergeists, thought-forms, tulpas, the Slenderman, Men in Black, and many other types of energy creatures.