Song of the Sagani - Last Sword in the West, #6

Two masters of the sword, One violent destiny. As a summer of warfare drags on between the church and the army, Tomas and Ghosthands are summoned by their respective commanders. The church believes it has finally cracked the secret of the nexuses, and the future of the fledgling nation is at stake. A lone scholar holds the precious secret, and as fate would have it, she's in Razin, with mysterious motives of her own. Her presence sets off a race between all the great powers.
Assassins, warriors, and knights descend on Razin to take possession of the knowledge. Only Tomas has the ability to get her out of the growing city and to safety before disaster strikes. But Ghosthands will do everything in his power to stop Tomas. As their showdown nears, Tomas and Ghosthands both have their own demons to slay. Their duel might well decide the fate of the nexuses and the world.