The book revolves around a young couple, Rosemary and Guy Woodhouse, who move into an old New York City apartment building with a sinister reputation. Eager to start a family, Rosemary becomes pregnant under mysterious circumstances. As she becomes increasingly isolated and ill, she discovers that her husband and their eccentric neighbors have malevolent plans for her unborn child, which are tied to a diabolical pact with supernatural forces. Her paranoia and fear escalate as she uncovers the truth about a conspiracy that involves the birth of the Antichrist, leading to a chilling realization about the fate of her baby.

"Down There" is a novel that follows the life of a Parisian novelist who is disillusioned with his mundane life and seeks solace in the occult. His journey leads him to a satanic priest who introduces him to the dark world of satanism. The protagonist becomes deeply involved in this world, experiencing hallucinations and disturbing visions. The book is a deeply psychological exploration of the human fascination with evil and the macabre, set against the backdrop of late 19th-century Parisian society.

In this gripping tale of the supernatural, a group of friends led by the astute and courageous Duke de Richleau confronts the dark forces of black magic in 1930s England. When they discover that their young friend Simon has become entangled with a dangerous satanic cult, they embark on a perilous mission to rescue him and thwart the cult's sinister plans. As they delve deeper into the world of the occult, they face terrifying rituals, demonic entities, and a relentless adversary in the form of the powerful and malevolent Mocata. The story weaves a tense and thrilling narrative of bravery, friendship, and the eternal struggle between good and evil.