Harry Potter and the Half-Blood Prince is a fantasy novel written by British author J. K. Rowling and the sixth and penultimate novel in the Harry Potter series. Set during Harry Potter's sixth year at Hogwarts, the novel explores the past of the boy wizard's nemesis, Lord Voldemort, and Harry's preparations for the final battle against Voldemort alongside his headmaster and mentor Albus Dumbledore.

Joanne Rowling ; born 31 July 1965), known by her pen name J. K. Rowling, is a British author and philanthropist. She wrote Harry Potter, a seven-volume fantasy series published from 1997 to 2007. The series has sold over 600 million copies, been translated into 84 languages, and spawned a global media franchise including films and video games. The Casual Vacancy (2012) was her first novel for adults. She writes Cormoran Strike, an ongoing crime fiction series, under the alias Robert Galbraith.