TU

Dolores Umbridge came to Hogwarts to strip fifth-year Ravenclaw Seraphina Vance of her voice, banning her sign language and charmed note-armband as "subversive." But as the Ministry floods the castle with eavesdropping charms, deaf and non-verbal Sera turns her lifelong mastery of silent, non-verbal magic into Dumbledore’s Army’s secret weapon—proving that the quietest witch in Hogwarts is the one Umbridge should fear the most.