Grim Gambit — Richard S. Tuttle

What starts out as a short trip to a temple turns into a race to stay alive as Marcus and Antioch are pursued by a mage enforcer and bounty hunters. Prodded by a priest and a caravan warrior, Marcus finally accepts his fate as the Avenging Shadow and dives into a deep conspiracy that is enslaving the population of Grim and cornering the market for iron.