As humanity colonizes outer space, they encounter a terrifying alien threat in this military sci-fi thriller.

In the twenty-fourth century, and human civilization has made a great leap forward, colonizing over a thousand planets and exploring thousands more. But after surviving a bloody civil war, they now face mysterious new threats.

In the Xan-4 System, scientists and Federation soldiers observe two alien races from an orbital station. Sergeant Henryan Swiecki must identify a group of people who—against procedures—are trying to save one of the races. At stake is not only the survival of the Warriors of the Bone, but also Henryan’s life.

Meanwhile, in the distant New Rouen System, a recycling ship known as the Nomad finds a millennia-old shipwreck while clearing the fields of long-forgotten space battles. The derelict’s advanced technology is impressive…but the being found onboard could shake the very foundation of human civilization . . .

Edge of Extinction