Harry Potter dream

Now, after writing that bit about being dreamless yesterday, I had a dream last night which I vaguely remember. It had something to do with Harry Potter being so consumed with his rage in the middle of a game where they had to hold some kind of sword that he slaughtered someone and was put in this mental hospital. Nope, not something I'd like to dream about again. But if the next book talks has a hint of anything like this, I will set my charges on my dreams.