Eberron: Blade of the Flame3 books in series
Thieves of Blood Summary
Diran used to make his living as an assassin - one of the best money could buy. But after a life-altering spiritual experience, he's turned his back on killing. All he wants is peace. But in a shoddy port city, his past catches up to him, and killing may be the only way to bring peace to a city on the verge of destruction.