From the description:
"The compelling cult classic, now reissued in a brand new edition with a new introduction by Brian Bates. This bestselling fictionalized account of an Anglo-Saxon sorcerer and mystic is based on years of research by psychologist and university professor Brian Bates. An authentic and deeply compelling insight into the spiritual world of the Anglo-Saxons, it has inspired thousands of people to learn more about the ancient northern spiritual tradition. A spiritual classic!"
It may be a classic, but it only has 20 reviews (4.4 stars) and one (5%) is negative. 288 pages.