The Darkest Touch. The Demon Hunter Series, #3

Now available from New York Times bestselling author Jaci Burton!Ryder. His touch could burn her down. A demon hunter whose skills matched hers. She never could forget him, nor could she stop wanting him. But archaeologist Angelique Deveraux has no time for passion, not when she's on the run with the black diamond, a prize everyone-including Ryder-wants to get their hands on. But she has a sister to save, so she has to run.
Hot on her heels is Ryder, the renowned demon hunter whose desires spark a fire within her, a man who loves danger and has a few secrets of his own. Ryder has only one mission-get the black diamond back from Angelique, and ignore the pain her leaving caused him. He has no time for emotion, not when the fate of the world is at stake. Except one look at Angelique brings back everything-the fire, the need for her, and one touch turns to an all-consuming flame of passion between them.
Now they're both on the hunt to save Angelique's sister before it's too late. Two people wary of love are going to have to put their fears aside and trust one another enough to live through this wild adventure, and maybe save the world in the process.