Speaker for the Dead ( Ender's Game: Book 2)

Ender Wiggin was once considered a great military leader, a saviour for mankind, but now history judges his destruction of an alien race as monstrous rather than heroic. In the aftermath of the war, Ender disappeared and a powerful voice arose: The Speaker for the Dead, who told the true story behind the battle with the aliens. Now, years later, a second alien race has been discovered, but again they are strange and frightening - and again, humans are dying. It is only the Speaker for the Dead, secretly Ender Wiggin, who has the courage to confront the mystery and the truth.