JK Rowling

There was an error on page 53 - in the collectible book world that's a huge deal.

The 4, new editions to the official HP universe will allow true potter-heads to delve deeper than ever before into the fantasy world's lore.

J.K. Rowling has pulled off some impressive literary wizardry: She has managed to gain acclaim for writing a detective novel without anyone knowing she had penned it.