Dr. Temperance Brennan and her students are working on a site of prehistoric graves on an island near Charleston, South Carolina, when a decomposing body is uncovered in a shallow grave off a lonely beach.

The bone is fresh and the remains are still topped by wisps of hair it’s a recent burial, and a case Tempe must take. Tempe determines that the deceased is a middle-aged white male – but who was he? Why was he buried in a clandestine grave? And what does an unusual vertical fracture of one of the vertebrae signify? Before long, another body is discovered – and Tempe finds herself drawn deeper into a shocking investigation which will challenge her entire view of humanity.