Dark Alpha's Fury by Donna Grant

From New York Times bestselling author Donna Grant comes another gripping story in her Reaper series featuring a brotherhood of elite assassins who wage war on the Fae at Death's behest—and the women who dare to love them.
There is no escaping the Reapers—or me. If you succumb to evil, you will be judged. And we will come for you.
I've known the torment of being trapped, of battling monsters—both outside and within. But I've also known the peace and completeness of holding the one I was meant for in my arms. Unfortunately, she's not intended for me. I am destined for one thing and one thing only: eradicating the evil that plagues our world. Once I deal with my nemesis, maybe I can finally rest. Even if it means my soul being reaped by the strong, beautiful, and utterly captivating woman who makes my heart beat like no other. But I'm not sure even that is possible. Because I am no longer merely a Fae. I am something else altogether.