you should watch the movie "The Exorcism of Emily Rose " a true story ,which will just give you some idea of demonic possession of a devout Catholic teenager and the priest who failed to deliver her from evil.Also evil ,witchcrafts are not a joke or you want to play with, and yeah these kinds of real stories of witchcraft and eveil entities are everywhere not only Nepal.watch the series of "A haunting" where the show is about it.