The demons we have left behind in old myths might be back in new technologies.

What if demons aren’t mythological beings but structural presences coded into our technologies, our stories, and ourselves? Demonology as Devourment Without a Devourer is neither a grimoire of evil spirits, nor a catalog of arcane names - it is a philosophical descent into the abyss that is the devouring logic of the demonic. In these pages, demonology becomes more than the mere study of demons; it becomes a theory of hunger, destruction, possession, and transformation. Through close readings of movies such as The Matrix, Constantine, and John Wick, as well as the Black Mirror series and other contemporary cultural texts, this book redefines demonology as the study of devourment: how systems consume their users, how messages erase their media, how reality is overwritten by simulation. Drawing from philosophy, theology, occult studies, and contemporary culture, this book reimagines the demonic not as an external evil but as a force that gnaws at human limits. The demon is no longer a mere symbol - it is a method, a rupture, a technology that unmakes and remakes the subject. The demon emerges not from hell but from feedback loops, virtual doubles, and machines that rewrite human desire. These are not beings of fire and brimstone - they are the operators of rules, the agents of erasure, the avatars of entropy. Philosophical, unsettling, and timely, Demonology as Devourment offers not an exorcism but a diagnosis. The demons have returned - wearing new skins.