The Duelists Trilogy, book 3: Warlords and Wastrels
Julia Knight2015

Vocho and Kacha may be known for the first swordplay in the city of Reyes, but they've found themselves backed into a corner too often for their liking.
Finally reinstated into the Duelist's Guild for services rendered to the prelate, who has found himself back in charge, Vocho and Kacha are tasked with bringing a prisoner to justice. But this prisoner is none other than Kacha's old flame Egimont. The prelate wants him alive, and on their side. However the more they discover of Egimont and his dark dealings with the magician, the more Kacha's loyalties are divided. Soon she must choose a side -- the prelate or the king, her brother or her ex-lover.
The fate of Reyes is balanced on a knife-edge...