Since this book was first published in 1975, the need for biblical instruction in matters pertaining to Satan’s activities and to the demonic in our culture has in no way lessened. Quite frequently I have been asked to address groups of church elders, school classes and youth fellowships on this subject. Invariably I have found not only a measure of confusion, but also much evidence of the involvement of young people from a Christian background being caught up in this dangerous activity with alarming results and I have noted the distress of their parents in such situations and their uncertainty concerning what to do. Many young people are now at great risk. Scores of books and television programmes continue to provide a poisonous cocktail of sex, violence and occultism. This is spiritually and morally lethal.

Frederick S. Leahy, Satan Cast Out (Edinburgh: The Banner of Truth Trust, 2017), 10.