I'm a total and complete skeptic, but I attended a lecture by the Warrens back in the early eighties. I have to say it was fascinating, but as far as I was personally concerned, either there was a logical explanation for what they "experienced," or else they were, shall we say, "exaggerating." Later in the same decade I was living in Pennsylvania and there was a family claiming demonic attack and the Warrens were involved. For a couple of weeks, the family got its fifteen minutes of fame with constant reports on the morning local TV news. The "case" became the basis of the book The Haunted which was turned into a made-for-TV film.
Gerard