At Hogwarts, Mattheo Riddle is known for being dangerous, unpredictable, and best avoided. But when he becomes fixated on a seventh-year student, his presence begins to blur the line between obsession and protection. At first, his attention is subtle—missing objects reappearing, cryptic notes, and the constant feeling of being watched. Then it escalates into something far more unsettling: a voice in the dark, moments of unseen physical proximity, and interference in anyone who poses a threat to her. As Mattheo’s control grows bolder, he stops hiding altogether, revealing himself as the force quietly shaping her world from the shadows. What begins as fear slowly transforms into a dangerous familiarity, as the boundary between intrusion and intimacy begins to dissolve. In the end, she no longer runs from the darkness—she recognises it.