Colonel Marcia Galloway's job is a challenge on the best of days. She leads Mercury Battalion, a military unit that offers sanctuary to society's deadliest members.
When a slip in concentration can level buildings or kill thousands, survival depends on self-control. On the worst of days, when discipline breaks and chaos erupts, Marcia is the one who picks up the pieces and punishes the guilty.
Once upon a time, a midlife crisis was a personal thing. These days it can lead to fires, floods, earthquakes, or plagues. For the unlucky few, midlife means starting over with a new body, new abilities, and new responsibilities.