During the events of Half-Blood Prince, a nineteen-year-old former Hogwarts student works from the shadows of Knockturn Alley, monitoring Draco Malfoy as he prepares a plan that will change the war. While Harry Potter watches from the outside, unaware of the full truth, she serves as Voldemort’s unseen agent, navigating loyalty, secrecy, and a dangerous bond with a Dark Lord who still wears his human face. What happens at Hogwarts is only half the story.