The unofficial Harry Potter prequel is an 800-word story written by J.K. Rowling. It was handwritten for a charity event at Waterstone’s and auctioned off for £25,000. It was published online on June 11, 2008. Set three years before the birth of Harry Potter, the story recounts an adventure had by Sirius Black and James Potter.
Although I did feel like a bit like a relapsing addict as I sat down to write, the words poured from my pen with frightening ease – I am NOT working on a prequel. Indeed, I’ve written that clearly at the bottom of the card itself. I just thought that this was the best way to make money for two extremely worthwhile charities. – J.K. Rowling