Hush, Hush series by Becca Fitzpatrick
For Nora Grey, romance was not part of the plan. At least, not until Patch came along. With his easy smile and probing eyes, Nora is drawn to him against her better judgment. But after a series of terrifying encounters, Nora’s not sure who to trust—she can’t decide whether she should fall into Patch’s arms or run and hide from him. And when she tries to seek some answers, she finds herself near a truth more unsettling than any feeling Patch evokes. For Nora stands amid an ancient battle between the immortal and those who have fallen—and choosing the wrong side will cost her life.