Haven by Dawn Sullivan

Haven Castle’s life was torn apart, her heart shattering when she realized the nightmares that have tormented her for years, are really images of a past she barely remembers—one that includes a brother who was her whole world, until she was ripped away from him at the age of three. Now, she will stop at nothing to find him, even if it means jumping headlong into danger that she never knew existed—until now.
Edge Ashford’s main purpose in life is to protect the innocent and remove the world of evil. Unable to save his family from an attack when he was young, he’s now focused on his job as a Rogue Enforcer, vowing to do whatever needs to be done to make sure no one goes through the same hell he did. Nothing else matters—until he agrees to do a favor for a friend, and ends up protecting the only woman who can make him see there’s more to life than work.
Unable to resist Haven’s pull, Edge agrees to help her uncover the mysteries of her past. And when danger begins stalking her, he’ll stop at nothing to keep her safe. He only came to protect her, but he already knows he won’t make it out of there without leaving his heart with her.