Quinton Aldren thought he could leave his past behind. He was wrong.

Quinton finally has a body of his own, a ship under his command, and the fragile beginnings of trust from a crew that still fears what he is.

Then another Personality Matrix Construct awakens.

Nash Harper is confused, damaged, and trapped inside a machine never meant to hold a human mind. Quinton refuses to abandon him. But as Harper's instability spirals, so does the terrifying possibility that the PMCs blamed for shattering the old galactic order were exterminated for good reason.

And Harper is only the first.

Across the stars, activation signals are waking soldiers hidden since the Federation Wars. Each one draws the Sentinels closer, merciless autonomous fleets built to hunt down every PMC and anyone who shelters them.

Someone is calling the soldiers of Acheron back into service. When Quinton uncovers a cryptic message pointing toward a final Acheron contingency lost for over a century, he realizes the secret buried in his past may be the galaxy’s last hope. But can he find it before the Sentinels destroy it?

From the author of the international bestselling First Colony series comes the next fast-paced military science fiction adventure in the Federation Chronicles, filled with lost warships, dangerous artificial intelligence, unlikely allies, and battles among the stars. Acheron Salvation is Book 2 in the Federation Chronicles.