Peter F. Hamilton

For context, and giving no spoilers, the story centers on a Light Chaser, or Amahle, a sort of interplanetary goddess whose responsibility is to travel through a universe packed with planets and gather/provide collars to its habitants to collect memories for a higher power. But this is the setup. Where the story quickly gets interesting is in its enigmatic character that keeps popping up who quickly challenges Amahle’s status quo and therefore sets a series of events that will change everything.