Matthew's hope of keeping Diana safe at Sept-Tours appears short-lived as Ysabeau refuses to welcome the warmblood under her roof. Knox calls an emergency meeting of the Congregation to denounce Matthew for abducting a witch but Matthew's ferocious older brother Baldwin plays a careful game to maintain control in the face of Gerbert foretelling the end of the de Clermonts – and throws Diana to the lions. Diana isn't the only witch facing persecution. Satu pays a shocking price for her curiosity when Knox discovers she has been searching through the Witches' Archive and learned his guilty secret. Meanwhile, things turn nasty in Oxford for Marcus and Miriam as Juliette attacks.

Satu brutally tortures Diana in Gerbert's isolated castle ruins. Matthew, now sworn to hunt down and kill anyone who tries to harm Diana, attempts a daring airborne rescue mission with Baldwin in tow, but they are too late to prevent Satu invoking dark magic in a bid to open up Diana and see the magic inside her. As Diana is forced to confront the idea that she might have been spellbound, she wonders what kind of monster she is. When Sophie confesses that she is a daemon born of witches, this news of cross-species offspring leaves Agatha reeling as she ponders the implications for all their lives.