The books talks about things you can say to the "cult" religions if they ever come to your door. The authors define a "cult" religion as anything outside of mainstream Christianity. They talk about Jehovah's Witnesses, Mormons, Moonies, Hare Krishnas and The Way. The book explains a little bit about the religion and the differences between them and Christianity. They base their comparisons on their interpretation of the different religious groups doctrines (God, Jesus, Mankind, and the Bible). Interesting read.