According to the internal chronology, this novel is the first in the Chrestomanci series, so named because their plots, some to greater degrees than others, involve a series of powerful nine-lived enchanters who each carry the title of Chrestomanci.
According to the internal chronology, this novel is the second in the Chrestomanci series. This series contains powerful nine-lived enchanters who each carry the title of Chrestomanci.