In this fast-paced story, a treacherous path from Scarpetta's past merges with the high- tech highway she now finds herself on. We travel back to the beginning of her professional career, when she accepted a scholarship from the Air Force to pay off her medical school debt. Now, more than twenty years and many career successes later, her secret military ties have drawn her to Dover Air Force Base, where she has been immersed in a training fellowship.

As the chief of the new Cambridge Forensic Center in Massachusetts, a joint venture of the state and federal governments, MIT and Harvard, Scarpetta is confronted with a case that could shut down her new facility and ruin her personally and professionally.