內容簡介 The Justice Keepers have faced their greatest defeat yet. Melissa Carlson was thrilled to enter the Justice Keeper training program. Now, she has begun a new life on Leyria: an idyllic planet that has overcome poverty and prejudice. But something dark simmers beneath the surface, as a terrorist group threatens to bring back the social unrest that the Leyrian people fought so hard to vanquish. Melissa's father, Harry Carlson, is having trouble adapting to life in a society that makes him feel obsolete. Is there room for a grizzled old cop in a world of robots and starships? Meanwhile, the Justice Keepers enter a new day - and direction - as Jack Hunter begins an investigation to root out traitors among them once and for all.