Crusader — Sara Douglass

For countless millennia the Star Dance and the TimeKeeper Demons have battled their way across the universe, destroying innumerable planets, and laying waste to civilizations across the cosmos. The forces that power the Star Dance have chosen Tencendor as the final battleground, and the people of Tencendor huddle in Sanctuary, a magical place created to shield all living things from the wrath of the monstrous Demons. Their only hope? The renegade DragonStar and his companions who will go forth to do battle.

But what DragonStar does not know is that there is a traitor who dwells within Sanctuary who is poised to open the haven to the Demons. And whose hatred for all that is good could undo the cosmos.