It was during fifth year that while in the room of requirement I summoned dementors and death eaters to come take over Hogwarts. Dumbledore approached and I held my wand at him ready to disarm. "You are no assassin", Dumbledore told me. "How do you know who I am? Some things will shock
you!" I yelled back."Don't you understand? I have to do this,I have to kill you! Or, they'll kill me..." I said while trying to hold my wand steadily and almost trembling.
Professor Snape came to my rescue once again and did the job for me.
Now, Dumbledore was gone. Snape, a few death eaters and I, fled the castle.