A failed Obliviate charm has left her virtually nonexistent — wiped from everyone’s memory, but hers is still fully intact. All people’s memories but one, that is: Dumbledore’s, thanks to his trusty Pensieve. Previously a sixth-year Gryffindor and one of Harry Potter’s best friends, Dumbledore decides to make her his newest double agent. Her mission: discover just what’s going on with Draco Malfoy this year. When in Rome, do as the Romans do.