"They came in peace, bearing gifts. The Gurus were a highly advanced species who brought amazingly useful and sophisticated technology to the human race. There was, of course, a catch. They warned of a far more malevolent life form, beings who have hounded the Gurus across the cosmos. The media have taken to calling them the Antagonists -- or Antags -- and they have already established a beachhead on Mars. For all they've done for us, the Gurus now...

"The conclusion to an epic interstellar trilogy of war from master of science fiction, Greg Bear. Marooned beneath the icy, waxy crust of Saturn's moon, Titan, Skyrine Michael Venn and his comrades face double danger from Earth and from the Antagonists, both intent on wiping out their growing awareness of what the helpful alien Gurus are really doing in our solar system. Haunted by their dead and by the ancient archives of our Bug ancestors, the former...