"Compelling. His novels take readers to the precipice of disaster."
--San Francisco Chronicle

Nanotech researcher Ruth Goldman has developed a vaccine with the potential to inoculate the world's survivors against the machine plague, but the fractured U.S. government will stop at nothing to keep it for themselves.

With her is Cam Najarro, a man who lived through the aftermath of the plague at great personal cost.

Determined to share her cure, Ruth and Cam must brave the devastated wasteland America has become. Together, they begin a cross-country odyssey during which they will encounter the best and worst in human nature -- unaware that an even greater threat is poised to strike...