Moon of Three Rings is science fiction with a heavy fantasy flavor. It was originally published in 1966 and appears to be the first in Norton's Moon Magic series. I bought my copy used.
Review:
This is the story of Krip Vorlund, a Free Trader, and Maelen, a Singer of the Thassa people of the planet Yiktor. Krip came to Yiktor hoping, as all young Free Traders do, to stumble across something that might make his fortune. He finds himself drawn to a beast show (basically a circus, although the text makes it sound more mystical than that) run by a beautiful and mysterious Thassa woman named Maelen. Maelen's goal is to one day add a barsk (a dangerous dog-like creature) to her group of "little people," and to one day perhaps take her beast show to space and other planets.
Unfortunately for both Krip and Maelen, there are dangerous politics at work, people who want power and the advanced weaponry Free Traders have access to (or so I understood - I admit that I lost track of the political aspects after a while). Maelen, her motivations a tangle, saves Krip's life but leaves him so changed that he wonders if it was worth it. The question then, is whether she can manage to make things right again, and what the ultimate price will be.


