Forensic anthropologist Diane Fallon has tried to put the past behind her, establishing herself as head of the River Trail Museum of Natural History. Late one night at the museum, Diane hears terrified cries and finds an injured man-a former coworker from her time as a human rights activist in South America.

Left with a body, a bone, and a cryptic message, Diane has to dig back into her past with World Account International, before the next human rights abused are hers...