Those who hope to find information about cults when purchasing this book need to look to other sources. As Hanagraaff points out in New Age Religion and Globalization, New Age religion is not cultic, but is based in cultural change.
Before I start, let me say that I was involved in New Age pursuits prior to becoming a Christian. I was a guru initiate, spent summers at a well known holistic center and was a proponent of mind-body healing techniques. Although I cannot say how much of an 'organized conspiracy' lies behind the New Age movement, I can say that studying its foundations exposes an underlying set of core beliefs which are still influential today and which are diametrically opposed to the tenets of authentic Christianity.
Although the book is short on documentation and has a dramatic conspiratorial tone, I am studying Biblical Prophecy almost 20 years after this book was written and am seeing many of Ms. Cumbey's hunches come to fruition.
A brief scan of the internet shows that many of the movements Ms. Cumbey attempts to document in her book (c. 1983) are still alive and kicking in the year 2002... ...Both scoffers and serious students of this type of material should read Gary Kah's book, THE NEW WORLD RELIGION, which is a far better documented and up to date commentary on the interweaving of New Age and New World Order in today's sociopolitical scene.