Years after the beloved daughter of the powerful Nott Family vanished during a storm, pureblood society has all but given up hope—until a mysterious Slytherin girl arrives at Hogwarts School of Witchcraft and Wizardry looking eerily similar to Theodore Nott. Dismissed at first as another fortune-seeking imposter by Theo, Mattheo Riddle, and Draco Malfoy, the truth becomes far darker when they discover she was raised by the cruel Lysander Family—a family that despises the Notts and forced her to live as little more than a servant beside their daughter, who is obsessed with Draco. As old feuds reignite and buried secrets unravel, the boys must face the horrifying possibility that the girl they spent years mourning may have been right in front of them all along.