Shaede Assassin, book 1: Shaedes of GrayAmanda Bonilla2011

In the shadows of the night, Darian has lived alone for almost a century. Made and abandoned by her former love, Darian is the last of her kind-an immortal Shaede who can slip into darkness as easily as breathing. With no one else to rely on, she has taught herself how to survive, using her unique skills to become a deadly assassin.

When Darian’s next mark turns out to be Xander Peck, King of the Shaede Nation, her whole worldview is thrown into question. Darian begins to wonder if she’s taken on more than her conscience will allow. But a good assassin never leaves a job unfinished…