Daemon Reckoning. Daemon series, #3

Hidden in the shadows of our world, supernatural creatures wage war for the fate of humanity. Euadaemons protect the innocent, Kakodaemons desire absolute power. Both have altered Krista Culver's life. After spending the past ten years as a Drone for evil, she's finally awake and doesn't want to waste another moment. No one will stand in the way of her kicking Kako butt. Not her sister, not her father, not even her incredibly tempting boss.
Racine is about to go mad trying to find his evil twin brother responsible for the Kako uprising, but Rysis is in the wind. Adding to his problems, Krista returned from Enforcer training. Gone is the sweet girl. In her place is a fierce woman who stirs something deep inside. Something he thought long dead and buried. As their desires grow so does the danger surrounding them. The Kako threat is mounting and the time for a reckoning has come.