J. K. Rowling is a British author best known for the Harry Potter series, seven novels published between 1997 and 2007 following a young wizard's education and his confrontation with the dark wizard responsible for his parents' deaths. The series became the best-selling book series in history, translated into dozens of languages and adapted into a film franchise of comparable commercial scale.
Rowling's achievement with Harry Potter was substantial: a richly imagined world with internally consistent rules, a cast of memorable characters developed across considerable length, and a tonal range that moved convincingly from children's adventure to something darker and more morally complex as the series progressed.
She has written adult fiction under the pseudonym Robert Galbraith, a crime series featuring private detective Cormoran Strike, which has attracted a solid readership on its own terms.