This review includes major spoilers.
Review:
Nazleen is the ruler of the Hamloorian people. Like all Lieges, she is Cerecian: a descendant of Stakezti, a mysterious golden-haired child who had special powers (telepathy, visions of the future, the ability to wield green fire). It was Cerecians who wielded their green fire against the violent Warriors and brought peace to this land. Since then, a female Cerecian Liege has always ruled Hamloor, reluctantly choosing a mate from among the Warriors when it comes time for her to conceive an heir.
Nazleen knows that she will need to choose a mate soon. Her choice will almost certainly be Miklav, the Warrior Chief. He's a Warrior, so she'll never be able to fully trust him, but he seems to be a good man, and he's made some changes to Warrior society that she finds surprising, intriguing, and a little unsettling. However, first she must deal with news that may shift the balance of power more in Miklav's favor: there have been several sightings of aliens, some of whom might be male Cerecians. There have only ever been female Cerecians, and it's uncertain whether these possible male Cerecians are peaceful or as prone to violence as the Warriors.
