|Fontana SF paperback, 1978. Cover illustration|
by Roy Ellsworth.
"What was the evil figure that haunted Franz Westen? Was it his imagination, or was it something infinitely more frightening, connected somehow with those old books he'd been reading? For there was much in those books to connect the figure with the bizarre twilight world of San Francisco in the 1920s, the world of H. P. Lovecraft, Clark Ashton smith, Jack London, Dashiell Hammett and Aleister Crowley. The more westen plunged into those misty reaches of the occult, the more he would uncover things which had perhaps better lain undisturbed. For Westen, in trying to unravel the mystery of our lady of darkness, was gambling with his life."