When war breaks out between the human civilisations and most Legion officers return home, only a handful are left behind to protect the Drift. With a fleet of deadly aliens set to invade in a matter of days, Elias must hunt down the only man with access codes for a vital arms cache. Unfortunately he has company. Elias and his crew are forced to share a ship with Sienna and her friends. A con-artist and a thief, Sienna is on the run from bounty hunters. He wants to save the Drift. She has other plans.

    And with good reason: he's been alive for three thousand years, keeping his existence a secret since before the days of Athens.But a stranger named Baxter has a better use for Rob's vast expertise. Baxter's looking to found a mining company in the Asteroid Belt. In exchange for Rob's help, he'll try to unravel the mystery of Rob's origin.As they're getting their outfit off the ground, they come under covert attack by HemiCo, a powerful Mars-based corporation. And Rob learns Baxter has a secret of his own--he's not human. He's a highly illegal AI.Developed by HemiCo in the wilds of Mars, the first AI escaped decades ago. They've been fighting a shadow war against their creators ever since. Dragged to Mars, Rob is thrown into the center of the fight--and becomes the unlikely leader of a revolution that will change the course of human history in the stars._________NOTE: A previous version of this book was published as The Roar of the Spheres.