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- Hermione finds Harry crying in the woods.
- Harry is upset that Sirius, his parents' friend, betrayed them.
- Harry says he'll kill him. Kill him dead.
- Back at Hogwarts, it's time for Harry's lesson with Lupin.
- Lupin teaches him the Patronus charm.
- It can work as a shield against Dementors.
- For it to work, Harry must think of a very happy, powerful memory, which, as expected, is pretty difficult for an orphan who is often being hunted by evil wizards who want to kill him.
- Using the boggart as a dummy of sorts, Lupin trains him to say "Expecto Patronum."
- Harry faints. That's not how it's supposed to work.
- Every time Harry passes out, Lupin gives him chocolate. We should pass out more often.
- Lupin asks Harry what happy memory he was thinking about.
HARRY: The first time I rode a broom.
- Eh. He'll have to do better than that.
- Lupin unleashes the Dementor/boggart, and Harry tries again.
- This time, it works.
- A beam of silver light issues from Harry's wand, shoving the boggart back into its box, where it belongs.
- What was Harry's memory? His parents, of course.
- Harry gets more chocolate as a reward. Lupin must singlehandedly keep Cadbury in business.
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