Angels of Deceit: The Masterminds Behind Religious Deceptions by Richard Lee; Ed Hindson (Good, 1993, Pbk, 261 pgs, Harvest House)

Angels of Deceit: The Masterminds Behind Religious Deceptions is a Christian apologetics book that examines the teachers and leaders behind cults — the "masterminds" and their extrabiblical revelations and teachings — to alert readers to the growing danger of spiritual deception. 

It's split into two parts:

Part One, "The process of spiritual deception", covers how people fall into false religion, the cultic mind-set, and erroneous doctrines in Christian-based, Hindu/Eastern-mysticism-based, and New Age cults, plus topics like spiritism, Satanism, demon possession, occult practices, and astrology. 
Part Two, "The masters of deception", profiles specific false prophets and cult leaders and offers biblical tests for identifying them.