Everyone at Hogwarts knows Vivienne Malfoy as Draco Malfoy’s twin sister. But the Malfoy name is a lie. Vivienne is secretly the daughter of Bellatrix Lestrange and Evan Rosier, making Mattheo and Thomas Riddle her half-brothers. To keep her safe, Dumbledore buried the truth years ago—and only four people know it and obviously their families. Now Vivienne is in fifth year, and one secret is becoming harder to hide. Theodore Nott has always been one of her closest friends. But Mattheo Riddle, his best friend, made one rule years ago: Vivienne is off-limits. The problem? Theodore is starting to wonder what happens when you fall for the one person you’re never supposed to want.