Ten years ago, Nathan led the team that built the sleepernet and pioneered the artificial intelligences known as the sleepers. After the tragic death of his wife due to an unforeseen problem with the sleepernet hardware, Nathan has dedicated his life to the safety and protection of others.

Titan is one of the most powerful of the nine supercomputers that run the sleepernet. He works directly with Nathan in matters both professional and personal. Titan's gemlike appearance reflects the vast depth of his emotions, if one takes the time to learn to read his expressions.

Suzie is a senatorial aide with extensive government experience. Her life is turned upside down when she realizes that her boss, Senator Delaware, may no longer be the same person the American people elected.

Flapjack is one of Nathan's oldest friends. There are very few things in the world that he can't build or fix. Gruff and factual, Flapjack has a talent for inconveniently accurate insights.

Kara Janek is a founding sleepernet engineer and one of Nathan's oldest friends. She decided to give up her grav suit in favor of her family and children. But does she really want to leave the old life behind?

Raj has a quick wit and a thick British accent. Optimistic and flamboyant, he's able to excel at just about anything he puts his mind to. Very few people can pull off some of the fashion he favors.

Liz is part of the medical team that developed the sleepernet implant hardware. As Reggie puts it, she's the one that puts the things in the brains. Curious and enthusiastic, she habitually gets lost in the details of an exciting discovery.

Reggie is the charismatic visionary who first recognized the potential of both the sleepernet and the team that could build it. As the chief executive officer, Reggie is just as comfortable navigating politics and the boardroom as he is piloting a grav suit.