Speaker for the dead

"Three thousand planet-bound years have fled since Edgar Wiggin won Earth's war with the Formics by totally destroying them. Ender remains young, traveling constantly at relativistic speeds. In three thousand years, the Hive Queen and the Hegemon have become holy writ, and the name Ender is anathema; he is the Xenocide, the one who destroyed the only other sapient race humankind had found in all the galaxy. The only ones, that is, until the planet called Lusitania was discovered and colonized. This discovery was seen as a gift to humanity, a chance to redeem the destruction of the hive queens. This time, the Starways Congress vowed, there would be no tragic misunderstanding leading to war. But once again men die, killed by the aliens in a rite no one understands. Ender, now known only as the Speaker for the Dead, comes to Lusitania to speak for the ones who died--and discovers that to tell the truth about them, he must unravel the secrets of Lusitania."--