Priam's Lens

Libro Usado, Tapa Blanda. Humans had finally gone to the stars, as the dreamers had always hoped; celestial stretches of the galaxy became the playgrounds of a new spacefaring race. But now these worlds were being taken over by Titans, creatures with unimaginable, godlike powers, supremely indifferent to humanity's survival. There was one chance to stop them. Helena, one of the Titan-dominated planets, concealed an untapped, hundred-year-old weapon--Priam's Lens. Getting to Helena would not be difficult, but activating the lens was another matter. No one had ever returned from a Titan encounter. They simply disappeared--status unknown.