Harry closed the book, heart pounding. The Prince had written this as a teenager — the same age Harry was now. Not dark magic. Loyalty magic. The kind Dumbledore talked about: love, trust, invisible ties.

The Half-Blood’s Compass

Loyalty doesn’t require friendship , the Prince’s note seemed to say. It requires seeing.

As he carried the elf down the stairs, the golden light faded. But for the first time that year, Harry felt something other than dread. The Half-Blood Prince had given him weapons — but also a compass. And a compass doesn’t tell you where to fight. It tells you where to help .

Harry’s breath caught. It wasn’t a map. It was a compass — showing him the people he trusted most. The people whose hearts were connected to his.

A story of what happened the night after Harry found the Half-Blood Prince’s Potions textbook — a missing scene that reveals the book’s first real secret. The common room fire had burned down to embers. Harry Potter sat alone in a cracked leather armchair, the old Potions textbook open on his knee. Advanced Potion-Making by Libatius Borage. But the real author was the Half-Blood Prince.

He turned the page. Another note: “Light follows loyalty. Test it in danger.”