The Forgotten Series by D.K. Holmberg

It was to be a routine assassination. And it was...until he saw her. Galen is an assassin gifted by the Great Watcher with extraordinary Sight. Hired to kill a beautiful woman he finds in the Durven, he questions why the price on her is so high. When he learns the reason, he must decide if he will save her, but doing so will pit him against the only assassin more dangerous than himself.

Continuing the story of The Durven: The assassin Galen wants nothing more than to get the beautiful Cael to safety. While on the run from thief-master Orly after stealing back one of the great crystals, they meet a man Galen feels compelled to help, a man dying because of something Galen did long ago. But doing so means facing a difficult part of his past all while struggling with the fact that Cael may protect him just as much as he protects her.

Book 3 of The Forgotten: Exiled from his homeland, the assassin Galen never thought he would return, but he promised the beautiful Cael he would see her safely returned. When they reach the city and Cael is abducted, Galen must work with an unlikely ally for much more than simply losing Cael is at stake.