The book uses the Nazi occultism covered in Goodrick-Clarke's 1985 book The Occult Roots of Nazism to trace similar phenomena in the post-war West. According to the author, movements with such interests are particularly prevalent in the English-speaking world. Because the occultism found in the SS can be traced to Ariosophy, which emerged from the völkisch movement, Goodrick-Clarke coins the term "neo-völkisch" for the groups he covers in the book. These groups are defined by "concerns with white identity and ethnicity" and in many cases take interest in "esoteric themes of Aryan origins, secred knowledge and occult heritage". Subjects surveyed include American and British neo-Nazism, the writings of Julius Evola and Francis Parker Yockey, Savitri Devi's and Miguel Serrano's Esoteric Nazism, belief in Nazi UFOs, neo-Nazi Satanism, Christian Identity, the World Church of the Creator and Nordic Racial Paganism.