Made me recall numerous hollywood movies based on true events especially, "The Amityville Horror". The guy ended up killing his family members within 28 days of living in the house and after interrogation he said that voices from within the house convinced him to do it. Interestingly, the guy had no previous record of any mental health issue before residing in the house.
Whatever we call it, the realm of the unseen is real, demonic forces exist and opening portals for them to our world results in incidents like these...