Advance copies of Prince Harry’s ‘tell-all’ book, titled Spare, have been few and far between, with many seasoned book reviewers not receiving copies, according to Sky News. With Harry detailing in his and Meghan Markle’s Netflix documentary that he believes information about the couple was leaked to the media, it’s hardly a surprise he’s keen to keep his book under wraps.

Nonetheless, alarming details have begun to emerge ahead of the controversial book‘s release on January 10. As reported by the Guardian after obtaining one of the sought-after copies, one section of the book includes Prince Harry’s claim that he was physically assaulted by his brother, Prince William—the future King of England and next in line to the throne.