One of the giants of popular fiction, with total sales of around fifty million books, Dennis Wheatley held twentieth-century Britain spellbound. His Black Magic novels like The Devil Rides Out created an oddly seductive and luxurious vision of Satanism, but in reality he was as interested in politics as occultism. Wheatley was closely involved with the secret intelligence community, and this powerfully researched study shows just how directly this drove his work, from his unlikely warnings about the menace of Satanic Trade Unionism to his role in a British scheme to engineer a revival of...