In our History of Magic exam, I was busily writing along when I noticed that Harry was having trouble. And I don't mean trouble as in "Oh, Merlin, I wish I'd paid attention instead of letting my studious friend take notes!" I mean trouble as in he got led out of the hall, fainting. I know Harry---few people know him better---and he is not the fainting sort. I may have skimmed through the rest of the test, but I knew this was a sign of serious trouble.