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 enter year two at 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.

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

'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

'The Combat Codes is a great read for any fan of realistic martial arts fiction. The integration of a compelling sci-fi / fantasy plot and true-to-life martial arts action make for a unique story that any student of warfare is sure to enjoy' Ryan Hall, UFC Fighter

'The Combat Codes by Alexander Darwin is a chimera blending Science Fiction and Fantasy to tell a vividly-realized tale both focused and sprawling. It's a book about warriors written by a master of the martial arts, and the mastery shows. In its pages, expect to explore power, politics, and brutal violence, but I repeat myself' Evan Winter, author of The Rage of Dragons