The aristocratic Duke de Richleau faces new, sinister challenges in this macabre tale of the dark arts.

When his good friend Simon Aron's naive curiosity is tested, the Duke, along with his ever-patient friends Rex Van Ryn and Richard Eaton, must intricately plot a means of both physical and spiritual rescue. But with Van Ryn's affection for a beautiful woman caught in the web of Satanists, and Eaton's ongoing skepticism, they all risk being brought to the verge of madness by dabbling with the powers of evil.

From London to the West Country, the slums of Paris to a Christian monastery, the action of this powerful occult thriller moves with fantastic, compelling force.

Dennis Wheatley (1897–1977) was an English author whose prolific output of stylish thrillers and occult novels made him one of the world’s best-selling writers from the 1930s through the 1960s.