This book was very interesting, informative, and with no underlying intention to make the reader believe demons exist or not. Although, I very much appreciated the author stating his beliefs. I have seen Richard Estep on TV, and admire his intent to inform the audience, so I wasn't surprised that this book has that same agenda. I wondered if the book would be dry, especially since I usually read non-fiction, but it was not dry at all. I had no idea there were so many different writings and lore about demons, which helped me lean more into my own belief of what they may be. I highly recommend this book.