Lorraine and Ed Warren I could personally discribe them and there nephew John Zaffis and the last words I would ever think of to discribe them would be Demonologist but this term is being coined by psychics and some preachers. I study Demonology and basically it is a indepth study of theology and cultures who needed to discribe a dark presence. Many cultures have similiar beings some are named most popular with people who claim to be "Possessed" recently is Baal I think because its a name easily rememberd.
I have studied all branches interviewed luciferian's and or people who have claimed to make a deal with a demonic or the devil also Rabbi's and Priests. Its a study of culture and superstitions connected to dark places nothing scary about it. Cause I am completly detached from it it means nothing to me but finding the truth.
In culture and superstitions.