Occultism has had many attacks from those aware of its dangers and abuses, but for the first time, a professional occultist has revealed what goes on behind the carefully guarded doors of the Black Lodges and what Black Occultists do when they attack or are attacked. Data also detailed practical instructions for detecting psychic attacks and protecting against them. The value of the book is greatly enhanced by the fact that the author writes from actual experience and cites many actual cases. The frankness and openness of this book may or may not meet with approval in occult circles. Translator's Note . One should carefully distinguish between the terms “psychism, psychic, psychic” (meaning mediumship, telepathy, superphysical) and “psychological” (i.e. related to human psychology).