This book by John Power is one of the first attempts I have seen to write a critical analysis of some of Mahendranath's writings. John was entrusted with the Uttarakaula tantric aspect of our world and he has obviously nurtured and worked with his specialty for as he says 21 years (and more now.) At the end of his analytical work he includes original, very creative and fascinating rituals that are the summation of his experience. It is quirky and personal and that adds greatly to its value. I have often gotten swamped by Mahendranath's large output of written words. To see a few of his major tantras re-worded, discussed, analysed and emotionally digested is so helpful. I recommend that those who are interested in the works of Mahendranath give this work more than a quick cursory glance.