The second book in an action-packed science fiction trilogy set on a far future world where the fate of nations is determined by battle-hardened warriors who are trained to compete in brutal single combat.

 "That rare book that fully satisfies me as an action fan." – Fonda Lee, author of Jade City on The Combat Codes​

In a world where single combat determines the fate of nations, the Grievar fight in the Circles so that the rest can remain at peace. But given the stakes, things are never so simple. The Daimyo govern from the shadows and plot to gain an edge by unnaturally enhancing their Grievar Knights.

Cego and his team return to the world’s most prestigious combat school, The Lyceum. Though he'd like to focus on his martial studies, Cego feels the pull of his mysterious past and two missing brothers.

Solara Halberd, daughter of the fighting legend, embarks on her own quest to bury the past. She must utilize every lesson her father taught her to explore unknown lands where evil lurks in the shadows.

"Darwin writes violence with the rhythm and surprise of a well-executed sonnet, wedding the smooth grace of choreography with the unflinching brutality of fists breaking bone. The fights are mesmerizing, layered like fascia, twitching and flexing and propelling the story toward a conclusion that both satisfies and opens the door to the next volume." – The New York Times on The Combat Codes