SI

For sixteen years, nobody knew Mattheo Riddle had a sister. You. Kept hidden from the wizarding world, you attend an all-girls wizarding school while Mattheo attends Hogwarts. But this summer, your parents give you a choice: stay where you are or transfer to Hogwarts for your sixth year. Then Mattheo’s friends come to stay for the summer. Draco. Theodore. Lorenzo. Blaise. None of them know you exist. Until you accidentally walk downstairs. “Mate, you never said you had a girlfriend.” “That’s not my girlfriend. That’s my sister.” Suddenly, Mattheo’s biggest secret is out. And with Hogwarts now becoming a possibility, you have no idea what kind of trouble being a Riddle daughter—and Mattheo’s sister—will bring.