Dr. Alan Caranac, an eminent ethnological researcher ( human cultures, of primitive people), from an ancient Brittany family, coming back after three long difficult years, in the rain forests of Africa. He doesn't expect a welcoming committee in New York, but is very surprised and disappointed by the absence of his two best friends. Not seeing them at the pier on his arrival, or the Explorer's Club where Alan is staying. He had written both, something doesn't feel right ... Richard Ralston a wealthy man without any job, but just to live in happy comfort and Dr. Bill Bennett a prominent physician, renowned brain specialist and associate of the great Dr. Lowell's, from Burn, Witch, Burn are the two great friends. Glancing at a day old newspaper, Mr. Caranac is shocked, Mr. Ralston he reads has committed suicide, one of four well to do men in the last few months. Police speculate a suicide pact, is responsible. Dr. Bennett looking like a sick dog, enters his room a few minutes later after a telephone call. He tells a strange story, Mr. Ralston being treated by Bill for many weeks had seen formless shadows, following him in places where they could not exist...that in actuality their friend, was forced to kill (murder, in fact), himself by a beautiful witch. Nightmares of creepy scenes, inhuman things seen, demons , dreams soaked in evil Richard had described. His whole body deteriorating, unable to sleep taking $100,000 from his bank, where it went nobody knows. Dr. Bennett thinks it is mental not real the shadows , but he is dead wrong the doctor discoverers soon after. Reporters and police talk to Alan, but warned by Bill to keep quiet , he says he doesn't know anything. A short time passes and he is invited to a small dinner party at Dr. Lowell's house. There he meets Dr. Lowell and after fifteen years Helen, all grown up and very pretty, Dr. Bennett's sister who as a kid put snakes in his bed for fun, which Alan didn't think was amusing. And she claims to like him very much! Dr. Rene de Keradel a pompous , famous French psychiatrist, crazier than any of his patients, is also in attendance , finally yet far from least, the most beautiful woman the Demoiselle Dahut, Dr. Caranac has seen the daughter of Keradel. He Alan can't believe how much she is, even scared to speak to the heavenly creature. The Demoiselle, believes Alan is a reincarnation of her lost lover from a long ago age, in France. Still she is perfect except for one little thing, Dahut is a witch, that enjoys killing, too many victims have fallen because of her wrath, along with her sorcerer father. They live like royalty, servants with glazed eyes serving their every need, she has a penthouse overlooking the East River, the father a mansion on the coast of Rhode Island, where both practice a lot of human sacrifice to ancient gods. Blood stains their clothes, the poor devils die a horrible death, Dr. Keradel and Dahut can change their apparel, the victims can not. Later Dr. Caranac, will experience the shadowlands, where the angry witch ( a love triangle develops, between her and Helen, for the unlucky man), sending him not quite dead or alive, creeping along a road, a shadow himself but to where ? Seeing hideous spirits too, not real but neither unreal, ghoulish specters in the air in another dimension of the wide universe... Lowell, Alan, Bill and the jealous Helen have to stop these fiends or the world will not survive....they need help from the absent gangster Julian Ricori, who is in Italy, he is good at eliminating... disagreeable people ...Bizarre yet fascinating yarn into the strange regions of the occult...or the insane.