For about twenty years now, the house of Emeric Belasco, known throughout the city as an ominous abode of ghosts, has been empty. All attempts to cleanse the Hell House fail, and those who take part in them either die or lose their minds. Nevertheless, the residents of the city do not lose hope. Physicist Barrett and his wife Edith, medium Florence Tanver, are ready to make another attempt at cleansing and psychic Benjamin Fisher. Will it be possible to get rid of the power of dark forces this time? One of the most outstanding works written in the genre of mysticism.