The Return of the Ancients

Nina is devastated when she realizes she must leave Plantas along with the man who is to become her mate, Ragnar, and her best friend, Tarena. When Nina arrives on Earth in Peru at the Nazca plains, she is greeted by a young archaeology student, Rand Jacobson. Even though she is attracted to Rand, she is still grieving the loss of Ragnar.
Ragnar is surprised when after being greeted as a god on the planet Seros, the military opens fire on his family. After being taken prisoner, he is treated like a lab rat until a scientist, Geni, comes to his rescue. At her estate, he learns the physicians who work with her have saved the lives of his family and friends.