The book deals with a neo-Nazi cult in Britain and an international conspiracy which includes a right-wing US general and a sinister arms dealer, and their obsession with and through the occult with resurrecting Heinrich Himmler.
In an earlier version of The Holy Blood and the Holy Grail/The Da Vinci Code lawsuit, Trevor Ravenscroft sued James Herbert  claiming the novel infringed on his 1973 non-fiction book The Spear of Destiny. Herbert declined to pay Ravenscroft damages and eventually removed the offending content.
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