This final volume of the trilogy that began with Powers That Be opens with the marriage of Yanaba Maddock, administrator of the sentient planet Petaybee, to geneticist and selkie Sean Shongili. The pregnant Yana soon has to travel off-world to defend Petaybee's interests before a skeptical galaxy, leaving the planet open to devious exploitation by such predators as old enemy Torkel Fiske. The narrative shifts focus between the primitive but honest planet and the glittering space city of Gal Three as travails mount at both locations.
The planet Pern has been colonized for centuries by humans. When humans first settled on this world, they did not take notice of its sister planet, which had an indigenous life form that attempted to land on Pern when it came within reach. These silver "threads" fell in a destructive wave on the temperate lands of Pern once every 200 years, destroying all life they encountered. To combat this menace, the inhabitants of Pern developed a species of dragon that could burn these threads out of the sky before they touched down.
In this sequel to Powers That Be , the hardworking inhabits of the sentient planet Petaybee continue their struggles with the magnates controlling Intergal Company. While chairperson Dr. Whittaker Fiske has been convinced of the planet's intelligence--and the necessity of negotiating with it--other members of the board believe that he and the Petaybeans are suffering from a collective delusion.
With a tale of human and other slaves abandoned by harsh masters on an ostensibly deserted planet, McCaffrey begins another highly readable series about successful survival in difficult circumstances. Kristin Bjornsen, an escaped human slave on the planet Barevi, saves one of the Catteni masters, Zainal, from being killed in a blood feud. When she tries to return him to the capital city, she is caught in a roundup of troublemakers designated for colonization duty.
Continuing the storyline from Freedom's Landing, this second book in the series finds the human and aliens on the penal planet Botany planning a rebellion against their slavemasters. After the Catteni subdue and transport to penal colony planets people from Earth and other civilizations for their Eosi masters, one Catteni, Zainal, chooses to remain on Botany. His plan? To join his fellow slaves in convincing the absentee owners of the planet to turn against the Eosi and free the colonists. McCaffrey is at her best with interspecies interactions and uniting for a goal against a common enemy.
