Ulysses Moore's novels were often called detective novels, a new genre that emphasized plot and logical reasoning. Although some readers may confuse it with science fiction, in fact, mystery novels are an independent literary genre that is not necessarily related to science fiction. Therefore, Ulysses Moore's novels were not considered science fiction. Although they may involve some sci-fi elements such as future technology and extraterrestrial life, they mainly emphasize plot and logical reasoning as a new and independent literary genre.