In "The Dumas Club" by Arturo Pérez-Reverte, the character Mr. Corso discovers a hidden world within dark cabinets where individuals possess profound knowledge of magical words known as carmina. This exploration reveals various mystical disciplines, including necromancy, which allows communication with the deceased. The atmosphere is tense and filled with anticipation as practitioners pause to connect with the spirits.

Moreover, the narrative delves into Goecia, the art that engages communication with demonic entities. These esoteric practices not only reflect the power and enigma of language but also evoke a sense of danger and intrigue as the characters navigate through this shadowy realm of magic and the supernatural.