Abstract
New religious movements (NRMs) have come under increasing scholarly scrutiny in recent years. One academic journal devoted entirely to the subject, Nova Religio: The Journal of Alternative and Emergent Religions, is in its tenth year as of this writing, and there is a regular slew of books from both academic and popular presses on the subject. Now, the field can be said to have something of an authoritative encyclopedia in Greenwood Press's five-volume Introduction to New and Alternative Religions in America. The set is an impressive achievement that will aid both scholar and layman in navigating the often nebulous territory of nonmainstream religion in the US.