On a remote, dusty road forty miles outside of Austin, Texas, FBI agent Joe Grant and a confidential informant are killed in a deadly shootout. Left to pick up the pieces is Mary Grant, Joe's young wife and mother of their two daughters. The official report places blame for the deaths on Joe's shoulders... but the story just doesn't add up and Mary has too many troubling questions that need answers. How did Joe's final voice mail--containing a cryptic warning for Mary, recorded moments before the fatal shooting--disappear without a trace from her phone? Stonewalled by the FBI, Mary will be drawn into a deadly conspiracy that puts her in the crosshairs of the richest and most powerful men in America... and the newest and most terrifying surveillance system known to man.