The topic of this book is surely controversial and may generate different reactions in readers. But there’s a very realistic background supporting the intention of writing it in such a way, and it’s indeed based on extensively researched facts and personal experiences.
Even though mainstream science still refuses to accept the possibility of demonic possession, and all other phenomena that tend to be categorized under the section of the paranormal, there are many psychiatrists that have witnessed and testified in favor of the belief that demonic possession is a fact.
On the other hand, even though there's a growing number of skeptics among the priesthood of the christian church, many admitted to have performed exorcisms and continue to do so.
My attitude regarding this issue started as being one of skepticism as well, although an increasing number of evidences forced me to accept this truth in order to learn how to manage it in my own life.