Sword and Shadow - Michelle Sagara - Bog

Beyond the Emperor's law
In the city of Elantra, the law is upheld by a few groups, and the most feared are the Wolves-the Emperor's executioners. The newest member of this elite force is Severn Handred.
Granted a leave of absence to pursue information about his unknown past, Severn joins a mission to an enclave well outside the boundaries of the Empire. And he will be in danger the entire time. Still, the instincts that led him to the Wolves and the sense of duty that keeps him there can't be discarded as easily as the tabard he wears.
While he's in the heart of the West March, enmeshed in a tangled web of mysteries that have been held for centuries, Severn's belief in justice is going to be tested. It's one mortal man and his single ally against a community of immortals who will kill to keep their secrets. But they don't know who they're up against.
"This world feels so complex and so complete." -ReadingReality.net on The Emperor's Wolves
The Wolves of Elantra
Book 1: The Emperor's Wolves
Book 2: Sword and Shadow