The Eqbas have come, bringing justice, change, hope to some . . . and death to many.

Seeking to punish the human gethes who caused the near destruction of an ocean-dwelling race in the distant Cavanagh's Star system, the Eqbas have finally landed on Earth. But another, equally important obligation has drawn them across the galaxy: the salvation of this environmentally ravaged world, a mission that could entail the annihilation of billions of humans.

Former police officer Shan Frankland has come as well-along with her two lifemates, one alien and one human-carrying in her blood the parasite that makes her virtually immortal. Though she once vowed never to let the powerful contagion reach the homeworld she left nearly a century ago, she feels compelled to play an active role in the unfolding drama-and to follow the catastrophic events that have devastated civilizations and defined her life to their shocking, inevitable end.