There is plenty of research and facts regarding people being possessed by bad entities, good people turning bad, in plenty of cases we have heard the perpetrators stating they were commanded to d terrible things, or demons, devils telling ghem t commit these acts, it is not far fetch, think outside the box, one of the most recently grotesque crimes, the one where the wife and 2 daughters were rzped, tortured, murdered and theb burned alive, well he perpetrator sated when he was 14 years of age he saw a devil and felt the possesion of his body, it is possible