20. Michael Jackson once approached Rowling about making a musical based on the books, but she turned it down.
21. However, a play about Harry’s life pre-Hogwarts is hitting the London stage in 2015.
22. For a long time, Rowling planned the last word in the series to be “scar,” but eventually changed the last sentence to “All was well.”
23. Voldemort was 71 years old when he died in the Battle of Hogwarts.
24. Dumbledore fell in love with Gellert Grindelwald.
25. Snape was not immediately added to the portraits in the headmaster’s office, but Harry insisted he be placed next to Dumbledore.
26. Most Black family members are named after stars or constellations. (Sirius is known colloquially as the “Dog Star,” reflecting its prominence in its constellation, Canis Major (Greater Dog).
27. A magnificent fountain in the middle of the park at Beauxbatons School is said to have healing and beautifying powers and is named for Nicolas and Perenelle Flamel.
28. Luna Lovegood became a naturalist and eventually married Rolf Scamander, with whom she had twin sons, Lorcan and Lysander.
29. Professor Quirrell was technically a temporary Horcrux, as were the animals Voldemort inhibited during his years of exile.
30. Arthur Weasley was supposed to die in Harry Potter and the Order of the Phoenix, but was replaced with Sirius.
31. Ginny Weasley became a professional Quidditch player for the Holyhead Harpies, but eventually retired to take care of her children.
32. She then became the senior Quidditch correspondent for the Daily Prophet.
33. James Sirius Potter, Harry’s oldest son, stole the Marauder’s Map from his dad’s desk.
34. Harry, Ron, and Hermione all got their own Chocolate Frog cards.
35. Herpo the Foul was the first person to create a Horcrux and the first person to breed a Basilisk.
36. Winky the house-elf is still at Hogwarts, but never got over her addiction to Butterbeer.
37. Harry and Dudley would still see each other after the Battle of Hogwarts, but they would visit more out of a sense of duty and sit in silence so that their children could see their cousins.
38. Hermione began her post-Hogwarts career at the Department for the Regulation and Control of Magical Creatures to help improve the lives of house-elves, but then moved to the Department of Magical Law Enforcement.