Kendra Leigh Castle 
Renegade Angel [EPUB ebook] 

Her fallen guardian angel It’s been thousands of years since Raum’s angelic wings turned from white to black and he’s never looked back. Enemy to both heaven and hell, he works with a motley crew on a new mission: destroying demons and their half-human progeny. Raum’s latest assignment leads him to a beautiful half-demon, half-human he’ll risk everything to save.Ember stirs him as no woman ever before – and she holds the key to what Lucifer will move hell and earth to prevent: Raum’s redemption. But Ember’s secrets are as dark as Raum’s wings. And have the power to both entwine them and destroy them.