| Major Characters |
 Thais Allard |
Main character of the series; also the narrator; Clio Martin's twin sister |
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| Clio Martin |
Main character of the series; also the narrator; Thais Allard's twin sister
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The Tréize Coven |
| Petra Martin |
Original member of the Treize coven; Thais and Clio's grandmother; the wise healer |
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Andre-Luc Martin |
Original member of the Treize coven; Clio and Thais are both in love with him; the heartless rake |
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| Daedalus |
Original member of the Treize coven; attempts to be the coven's leader; the mayor |
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Jules |
Original member of the Treize coven; ambitious male slave | |
| Axelle Guavin |
Original member of the Treize coven; the headstrong woman |
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| Richard Landry |
Original member of the Treize coven; the boy yet not a man |
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| Oudia Jeffers | Original member of the Treize coven; the female slave |
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| Marcel | Original member of the Treize coven; hides in a convent in Ireland, trying to flee from his past; the innocent and naive young man | |
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| Claire | Original member of the Treize coven; hides in Thailand, drinking herself away; the immoral village outcast |
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| Sophie | Original member of the Treize coven; the virginal young woman |
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| Manon | Original member of the Treize coven; the girl, not yet woman |
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Cerise Martin |
Original member of the Treize coven; daughter of Petra; died in childbirth; the unwed, pregnant young woman |
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| Malita Martin | Original member of the Treize coven; daughter of Petra and Cerise's sister; the dark witch who performed the rite that would change the Treize coven members' lives; unknown if she is alive or not |
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| Supporting Characters |
| Mrs. Thompkins | Thais's next door neighbor in Connecticut |
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| Racey Copeland | Clio's best friend; member of the Balefire coven |
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| Eugenie LaFaye | One of Clio's friends |
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| Nicole | One of Clio's friends |
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| Kris Edwards | One of Clio's friends |
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| Della | One of Clio's friends |
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| Brother Eric | The Brother whom Marcel confesses his sins to |
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| Sylvie Allen | Girl who helps Thais out on Thais's first day of school |
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| Miranda Hughes | Girl at Clio's party; opened the door to let Andre in |
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| Melysa | Elder witch in the Balefire coven; Petra's close friend |
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| Mrs. DiLiberti | Most likely the school secretary at Thais's new school |
