Whether you’re a diehard Potterhead or just a casual Harry Potter fan, you’ll surely know the classic spells—Expecto Patronum ...

And while publishing has a history of transforming popular fan fiction into new novels — “ Fifty Shades of Grey ” was based on “Twilight” fanfic, after all — Dramione hasn’t really had its moment.

Hermione’s fierce battle against the witch journalist Rita Skeeter begins in the Harry Potter and the Goblet of Fire, and it’s one of the most savage arcs that never made it to the films. While we get ...