Disclaimer for the whole story: I don't own Harry Potter. I belongs to the gret J.K. Rowling and I'm just writing a little something with no commercial thought or profit.
Edited: 28.2.16
1) Prolog
Harry Potter stared at his Professor, whom he trusted so completely all his years in Hogwarts, betrayal showing at his face. „Why?", he croaked, avoiding another cutting hex, already bleeding from many wounds.
„I'm sorry, m'dear boy. But you have strayed from the right path. Please understand, that I'm doing this for the greater good.", Albus Dumbledore said, his twinkling eyes looking at the boy-who-lived.
„So what? That gave you the right to leave me there? With the Dursleys? You knew how I were treated, don't tell me you didn't expect it to happen sometime. It was bound to happen, Professor.", Harry spat the last word, his hurt showing through.
„You shouldn't have attacked Dudley, Harry. You're connection to Tom has been influencing you greater than I anticipated. A misjudge on my part, I must acknowledge that."
„It was just a harmless threat. Merlin, Professor! You can't think I'm going dark because of that!"
„Your knowledge on Dark Arts.."
„I had to learn that to survive! To kill him!"
„…Your Rule breaking…"
„When you're never telling me anything"
„.. and you being a parseltongue and that you're using that dark ability. Harry, you're falling into the dark. I will let you die as a light wizard. I will tell them, that you died a martyrs death."
„But I don't want that!", Harry had backed away, his wand drawn, but he didn't dare attack Dumdledore, everything seemed so unreal. Was Voldemort trying to trap him with a vision again? Like he did with Sirius?
„I'm sorry, m'boy." Harry felt a tear dwelling in his eye, but he refused to let it fall, while he found himself unable to move.
„Avada Kedavra.", said Dumbledore, his eyes twinkling and a little smile crossed his lips.
And then Harry knew no more.