The national bestselling author of Battle Hymn delivers a high-velocity sci-fi thriller in which a lone lawman must take down those who would topple an empire…

For centuries, the Uman Empire has ruled the civilized universe. But not all of the alien races who were "invited" to join the Empire have done so willingly. To deal with these alien species, the Xeno Corps was formed—bio-engineered humans with extra-sensory enhancements who can hunt down, capture or eliminate all such threats to Pax Umana.

Jak Cato is a one of them—but he's far from a perfect specimen. Saddled with a dislike for authority and a penchant for self-destructive behavior, only his devotion to duty and sense of honor have kept him afloat in the Corps.

When he and his comrades are waylaid on a remote planet while transferring a lethal, shapeshifting Sagathi prisoner, Cato is sent into town for supplies, only to end up drunk, beaten and robbed. But worse news awaits him when he wakes. His entire detachment has been mercilessly slaughtered and the Sagathi is gone.

Now Cato must use all his innate skills to hunt down the fugitive and pay back the bastards who murdered his team. But what he doesn't know is that his pursuit will lead him outside the law and into a shadowy world of Imperial intrigue—where those who seek justice rarely get it, and rarely survive…

"A testosterone-soaked tale of violent retribution."—Publishers Weekly

"Dietz writes fast-paced military SF."—Library Journal