Some content in this article is derived from information featured in Harry Potter and the Cursed Child, and, as such, spoilers will be present.
A copy of the book is kept in the Restricted Section of the library of Hogwarts School of Witchcraft and Wizardry. Hermione Granger checked it out in early 1997 in an attempt to gain information on Horcruxes, only to be thoroughly annoyed by its lack of information. In 2020, Hermione Granger had a copy of this along with many other dangerous or banned books on her bookshelves in her office as British Minister for Magic.
Godelot wrote down this collection of dangerous spells with the help of his wand (says Godelot in his notebook) which he claims is made of Elder (Deathly Hallows believers consider this to be the Elder Wand). This body of work greatly advanced the study of Dark Magic. Horcruxes, however, receive only a brief mention in the book, which does not detail what they really are.
- Harry Potter and the Half-Blood Prince (First appearance)
- The Tales of Beedle the Bard (Mentioned only)
- Harry Potter and the Cursed Child
- Harry Potter and the Cursed Child (play)