The Child between Good and Evil

Harry gets back after his first year in Hogwarts. He already knows how manipulative Dumbledore, the leader of the "light" is and decided to hide his true knowledge and power from him. He can't trust the friends given to him, but he knows he can always trust his familiar. The treatment at the Dursleys was the same as before, but everything changed when one of his uncles punishments went to far. Who is he really and is Dumbledore maybe even more evil than Harry already thought?