Eden's Angels

In 1954, Ensign James Cortell wakes up from a coma with memories of an alien scientist who had visited Earth some fifty thousand years ago. Years later, he realizes this knowledge should not be taken to his grave. Earth’s extraterrestrial visitors altered Homo sapien DNA to produce modern humans. Soon the industrialist overlords among the alien race realize that genetically altered humans offer a source of cheap labor. A galactic slave trade is born.