Angel's Target. Elemental Angels, #1

His job is to vanquish the demon threat. But when a mortal woman gets stuck in the crossfire, can he protect her from the new target on her back? Titan is second-in-command of the fallen sentinel angels, a fearsome group of earthbound angels who are tasked with protecting heaven from the demon charmers. The eternal struggle has cost many lives, one of which Titan still blames himself for six months later.
But when a mortal woman becomes a target of his enemy, he saves her-only to discover she looks just like the woman he lost months ago. Not a day goes by that Rose Meyer doesn't spend looking for her twin sister. With a newfound lead at her fingertips, she heads out in search of clues to her sister's whereabouts. What she finds, however, is a frightening magic user intent on killing her-and a hulking angel of gleaming metallic titanium who shuttles her out of the kill zone. And refuses to let her out of his protection. Her touch has sparked a celestial power in him that has been lost since he and his brothers fell.
But as Titan's power grows, so does the mysterious bond between him and the woman occupying his every thought. When they learn that Rose unknowingly possesses what the demons are searching for, their deep connection is tested as tensions run high. Because this elemental angel refuses to put her in harm's way. Even if it means shattering his heart in the process.