A wide ranging, well researched and thoughtful overview of an area of spirituality which is often shunned and misrepresented.
Looks at Eastern traditions before focussing on Western traditions for most of the book. The author examines possible Left Hand Path streams in Pagan antiquity, then goes through different historical epochs (from first millennium onwards) examining different cults, religious, philosophical and mystical streams and figures to see how they measure up to the definition he has agreed upon as being "Left Hand Path".
The author gives interesting and thorough expositions of the modern Church of Satan and Temple of Set, and their founders, and uses these as detailed examples of the "immanent" and "transcendent" branches to the Left Hand Path, which he feels can be perceived..
In addition he gives a lucid analysis of the "satanic panic" hysterias of the 1980s and 90s, which deserve widespread reading in themselves, given that some are still suffering under the unenlightened after effects of the hysteria, and professional bodies have never publicly owned up to their active collusion in a social scape goating delusion.