On the planet Na-Dina, in Ancestor's Valley, the tombs of forty-onedynasties have lain undisturbed for six thousand years. But the visitors from the stars have brought with them progress, threatening theValley and its treasures. The human archeologist Gordon Mitchell and his team from StarBridge labor tosalvage whatever is possible from the burial sites. Some of the Na-Dina welcome them.Some resent their presence and the delay they represent. Still, Mitchell intends to fullyexplore the wonders of the Valley. Then one of the team is brutally murdered. To investigate his death, CooperativeLeague of Systems Ambassador-At-Large Mahree Burroughs arrives, determined to findthe killer at whatever cost. What she finds during her search will change her life, the lives of the Na-Dina, andthe lives of every being in the CLS forever . . .