In this book, Roger Skrenes explains how the teaching that only two possible realms exist after death, that of Heaven and Hell, as argued by many non-Catholic Christians, is not correct. Christ actually spoke of a third place beyond death where some Christians, still living in the grace of Christ, will nonetheless be cleansed and improved to prepare them for Heaven. These rehab people are those who have remained attached to God by grace but have certain ingrained personal imperfections needing improvement. Such a place (or state) is termed "Purgatory," through which the author will guide his readers.