Grant provides an exhaustive and critical study of Crowley’s system of sexual magick and the strange rites which he practiced and advocated for the purpose of promoting the Law of Freedom with its formula of “Love under Will”. The book reveals the occult workings of the Fire Snake or Kundalini-Goddess, the cosmic power in man which, when awakened by magical means, assumes an external form identified by Crowley as the Scarlet Woman, she who influences the secret power-zones in the body of man and invokes the Hidden God. Grant also describes a method of dream control involving the use of the Ophidian Current transmitted by Crowley, Austin Spare, Dion Fortune, and others. It’s object is to establish contact with extra-terrestrial and non-human beings with the ultimate purpose of transcending the limitations of personality and of realizing cosmic consciousness, thus fulfilling the magical formula of the New Aeon.

This enhanced edition integrates the errata from the previous Skoob edition within the text, and incorporates further corrections noted subsequently in Kenneth Grant's personal copy of the book. Where possible, plates have been rephotographed, and some are presented in colour. There are also some new plates included by Steffi Grant.