The Gods of Sagittarius

In this gripping alternate history science fiction adventure by Eric Flint and Mike Resnick, top security specialist Russ Tabor finds himself reluctantly guarding the brilliant savant Rupert Medawar Narayan Shenoy, who believes the ancient aliens known as the Old Ones wielded god-like powers through lost forms of magic. As they embark on a quest to uncover these secrets, alien shaman Occo seeks revenge after her cloister is destroyed, seemingly by the long-thought-perished Old Ones. With their paths intertwined, Russ and Occo must confront their differences and unite if they hope to survive the impending clash with these enigmatic deities of Sagittarius.