The Harry Potter prequel is an 800-word story written by J. K. Rowling, and was published online on 11 June 2008. Set about three years before the birth of Harry Potter, the story recounts an adventure experienced by Sirius Black and James Potter.

At the bottom of the card, JKR wrote: "From the prequel I am NOT working on - but that was fun!"

There is no official 'cover' for this short story, seeing as it was penned (By JKR) on an A5 card for the auction by bookseller Waterstone's, in aid of two reading charities, Dyslexia Action and English Pen. It was auctioned off for £25,000.

Harry Potter has no idea how famous he is. That's because he's being raised by his miserable aunt and uncle who are terrified Harry will learn that he's really a wizard, just as his parents were. But everything changes when Harry is summoned to attend an infamous school for wizards, and he begins to discover some clues about his illustrious birthright. From the surprising way he is greeted by a lovable giant, to the unique curriculum and colorful faculty at his unusual school, Harry finds himself drawn deep inside a mystical world he never knew existed and closer to his own noble destiny.

Ever since Harry Potter had come home for the summer, the Dursleys had been so mean and hideous that all Harry wanted was to get back to the Hogwarts School for Witchcraft and Wizardry. But just as he’s packing his bags, Harry receives a warning from a strange impish creature who says that if Harry returns to Hogwarts, disaster will strike.

And strike it does. For in Harry’s second year at Hogwarts, fresh torments and horrors arise, including an outrageously stuck-up new professor and a spirit who haunts the girls’ bathroom. But then the real trouble begins – someone is turning Hogwarts students to stone. Could it be Draco Malfoy, a more poisonous rival than ever? Could it possibly be Hagrid, whose mysterious past is finally told? Or could it be the one everyone at Hogwarts most suspects… Harry Potter himself!

Harry Potter, along with his best friends, Ron and Hermione, is about to start his third year at Hogwarts School of Witchcraft and Wizardry. Harry can't wait to get back to school after the summer holidays. (Who wouldn't if they lived with the horrible Dursleys?) But when Harry gets to Hogwarts, the atmosphere is tense. There's an escaped mass murderer on the loose, and the sinister prison guards of Azkaban have been called in to guard the school...

The summer holidays are dragging on and Harry Potter can't wait for the start of the school year. It is his fourth year at Hogwarts School of Witchcraft and Wizardry, and there are spells to be learnt, potions to be brewed and Divination lessons (sigh) to be attended. Harry is expecting these: however, other quite unexpected events are already on the march ...

A much-awaited new Harry Potter adventure from an acclaimed story-telling genius.