The Blacktongue Thief by Christopher Buehlman

Kinch Na Shannack owes the Takers Guild a small fortune for his education as a thief, which includes (but is not limited to) lock-picking, knife-fighting, wall-scaling, fall-breaking, lie-weaving, trap-making, plus a few small magics. His debt has driven him to lie in wait by the old forest road, planning to rob the next traveller that crosses his path. But today, Kinch Na Shannack has picked the wrong mark.

Galva is a knight, a survivor of the brutal goblin wars, and handmaiden of the goddess of death. She is… Read more.