The Saga of the Skolian Empire, informally called the Skolian Saga or Tales of the Ruby Dynasty, is a series of science fiction novels, novelettes and novellas by Catherine Asaro, revolving around characters from an interstellar empire known as the Skolian Empire and their power struggle with the rival Eubian Concord. The plot of the book unfolds over several generations of characters and revolves around political intrigues, but also contains subplots regarding physics, bio-enhancements, virtual computer networks, romance, mathematics, and military conflict as it is affected by supraluminal space travel.
The Ruby Dynasty, the ancient rulers of the Skolian Empire, while possessing empathic and telepathic abilities enhanced by "pico" and "nano" technology, comprise a monarchy plagued by internal struggle and conflict with the elected Assembly.
The Eubian Traders, on the other hand, while larger in number and more successful economically, comprise a society built entirely of a slave hierarchy run by Aristos, who have been genetically engineered and have no capability for compassion, but rather experience pleasure in the form of "transcendence" through the projected suffering of powerful psions that have been kidnapped from the Skolian Imperialate.
A third but much smaller group, the Allieds, are an extension of a present-day Earth civilization who enter space travel only to find all worlds are already inhabited and thriving under either the Skolian or Eubian Empire. Their role in the series is that of a neutral party, interested only in the cessation of hostilities.