She's Buried Deep (An Artemis Blythe Fbi Mystery Thriller)

Artemis Blythe has returned to her old stomping grounds, now as a consultant of the FBI. And this new case will be like none other. A mass grave is found in the mountains. The bones of forgotten victims hidden in a mineshaft, but what is some of the bones belong to her sister? Helen disappeared around the same time as these graves were formed.