At least some content in this article is derived from information featured in Harry Potter: Hogwarts Mystery. Spoilers will be present within the article.
|"There are plenty of eye-witness accounts. Just because you're so narrow-minded you need to have everything shoved under your nose before you–"
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A book with several drawing and notes was kept in a Cused Vault on the fifth floor of Hogwarts Castle. It was a found by Jacob's sibling and their friends, who believed that the book contained hints on the other Vaults' locations.