The Life and Times of Rosemary Black

Rosemary Black is a mysterious character. Shy but easy-going, with odd scars down her face, she seems queer and different, though she acts quite ordinary. But, as Harry, Hermione, Ron and Seamus discover, there's more to the young witch than first appears. Part one of a saga. Goes through Prisoner of Azkaban, and up to Goblet of Fire. Eventual Seamus/OC in later additions.